lustre/llite/llite_lib.c

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  19  *
  20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  21  * CA 95054 USA or visit www.sun.com if you need additional information or
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2011, 2015, Intel Corporation.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  *
  36  * lustre/llite/llite_lib.c
  37  *
  38  * Lustre Light Super operations
  39  */
  40
  41 #define DEBUG_SUBSYSTEM S_LLITE
  42
  43 #include <linux/module.h>
  44 #include <linux/statfs.h>
  45 #include <linux/time.h>
  46 #include <linux/types.h>
  47 #include <linux/version.h>
  48 #include <linux/mm.h>
  49 #include <linux/user_namespace.h>
  50 #ifdef HAVE_UIDGID_HEADER
  51 # include <linux/uidgid.h>
  52 #endif
  53 #include <linux/security.h>
  54
  55 #include <lustre_ioctl.h>
  56 #include <lustre_ha.h>
  57 #include <lustre_dlm.h>
  58 #include <lprocfs_status.h>
  59 #include <lustre_disk.h>
  60 #include <lustre_param.h>
  61 #include <lustre_log.h>
  62 #include <cl_object.h>
  63 #include <obd_cksum.h>
  64 #include "llite_internal.h"
  65
  66 struct kmem_cache *ll_file_data_slab;
  67
  68 #ifndef log2
  69 #define log2(n) ffz(~(n))
  70 #endif
  71
  72 static struct ll_sb_info *ll_init_sbi(void)
  73 {
  74         struct ll_sb_info *sbi = NULL;
  75         unsigned long pages;
  76         unsigned long lru_page_max;
  77         struct sysinfo si;
  78         class_uuid_t uuid;
  79         int i;
  80         ENTRY;
  81
  82         OBD_ALLOC_PTR(sbi);
  83         if (sbi == NULL)
  84                 RETURN(NULL);
  85
  86         spin_lock_init(&sbi->ll_lock);
  87         mutex_init(&sbi->ll_lco.lco_lock);
  88         spin_lock_init(&sbi->ll_pp_extent_lock);
  89         spin_lock_init(&sbi->ll_process_lock);
  90         sbi->ll_rw_stats_on = 0;
  91
  92         si_meminfo(&si);
  93         pages = si.totalram - si.totalhigh;
  94         lru_page_max = pages / 2;
  95
  96         /* initialize ll_cache data */
  97         sbi->ll_cache = cl_cache_init(lru_page_max);
  98         if (sbi->ll_cache == NULL) {
  99                 OBD_FREE(sbi, sizeof(*sbi));
 100                 RETURN(NULL);
 101         }
 102
 103         sbi->ll_ra_info.ra_max_pages_per_file = min(pages / 32,
 104                                            SBI_DEFAULT_READAHEAD_MAX);
 105         sbi->ll_ra_info.ra_max_pages = sbi->ll_ra_info.ra_max_pages_per_file;
 106         sbi->ll_ra_info.ra_max_read_ahead_whole_pages =
 107                                            SBI_DEFAULT_READAHEAD_WHOLE_MAX;
 108
 109         ll_generate_random_uuid(uuid);
 110         class_uuid_unparse(uuid, &sbi->ll_sb_uuid);
 111         CDEBUG(D_CONFIG, "generated uuid: %s\n", sbi->ll_sb_uuid.uuid);
 112
 113         sbi->ll_flags |= LL_SBI_VERBOSE;
 114 #ifdef ENABLE_CHECKSUM
 115         sbi->ll_flags |= LL_SBI_CHECKSUM;
 116 #endif
 117
 118 #ifdef HAVE_LRU_RESIZE_SUPPORT
 119         sbi->ll_flags |= LL_SBI_LRU_RESIZE;
 120 #endif
 121         sbi->ll_flags |= LL_SBI_LAZYSTATFS;
 122
 123         for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
 124                 spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].
 125                                pp_r_hist.oh_lock);
 126                 spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].
 127                                pp_w_hist.oh_lock);
 128         }
 129
 130         /* metadata statahead is enabled by default */
 131         sbi->ll_sa_max = LL_SA_RPC_DEF;
 132         atomic_set(&sbi->ll_sa_total, 0);
 133         atomic_set(&sbi->ll_sa_wrong, 0);
 134         atomic_set(&sbi->ll_sa_running, 0);
 135         atomic_set(&sbi->ll_agl_total, 0);
 136         sbi->ll_flags |= LL_SBI_AGL_ENABLED;
 137         sbi->ll_flags |= LL_SBI_FAST_READ;
 138
 139         /* root squash */
 140         sbi->ll_squash.rsi_uid = 0;
 141         sbi->ll_squash.rsi_gid = 0;
 142         INIT_LIST_HEAD(&sbi->ll_squash.rsi_nosquash_nids);
 143         init_rwsem(&sbi->ll_squash.rsi_sem);
 144
 145         RETURN(sbi);
 146 }
 147
 148 static void ll_free_sbi(struct super_block *sb)
 149 {
 150         struct ll_sb_info *sbi = ll_s2sbi(sb);
 151         ENTRY;
 152
 153         if (sbi != NULL) {
 154                 if (!list_empty(&sbi->ll_squash.rsi_nosquash_nids))
 155                         cfs_free_nidlist(&sbi->ll_squash.rsi_nosquash_nids);
 156                 if (sbi->ll_cache != NULL) {
 157                         cl_cache_decref(sbi->ll_cache);
 158                         sbi->ll_cache = NULL;
 159                 }
 160                 OBD_FREE(sbi, sizeof(*sbi));
 161         }
 162         EXIT;
 163 }
 164
 165 static inline int obd_connect_has_secctx(struct obd_connect_data *data)
 166 {
 167         return data->ocd_connect_flags & OBD_CONNECT_FLAGS2 &&
 168                data->ocd_connect_flags2 & OBD_CONNECT2_FILE_SECCTX;
 169 }
 170
 171 static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
 172                                     struct vfsmount *mnt)
 173 {
 174         struct inode *root = NULL;
 175         struct ll_sb_info *sbi = ll_s2sbi(sb);
 176         struct obd_device *obd;
 177         struct obd_statfs *osfs = NULL;
 178         struct ptlrpc_request *request = NULL;
 179         struct obd_connect_data *data = NULL;
 180         struct obd_uuid *uuid;
 181         struct md_op_data *op_data;
 182         struct lustre_md lmd;
 183         u64 valid;
 184         int size, err, checksum;
 185         ENTRY;
 186
 187         obd = class_name2obd(md);
 188         if (!obd) {
 189                 CERROR("MD %s: not setup or attached\n", md);
 190                 RETURN(-EINVAL);
 191         }
 192
 193         OBD_ALLOC_PTR(data);
 194         if (data == NULL)
 195                 RETURN(-ENOMEM);
 196
 197         OBD_ALLOC_PTR(osfs);
 198         if (osfs == NULL) {
 199                 OBD_FREE_PTR(data);
 200                 RETURN(-ENOMEM);
 201         }
 202
 203         /* indicate the features supported by this client */
 204         data->ocd_connect_flags = OBD_CONNECT_IBITS    | OBD_CONNECT_NODEVOH  |
 205                                   OBD_CONNECT_ATTRFID  |
 206                                   OBD_CONNECT_VERSION  | OBD_CONNECT_BRW_SIZE |
 207                                   OBD_CONNECT_MDS_CAPA | OBD_CONNECT_OSS_CAPA |
 208                                   OBD_CONNECT_CANCELSET | OBD_CONNECT_FID     |
 209                                   OBD_CONNECT_AT       | OBD_CONNECT_LOV_V3   |
 210                                   OBD_CONNECT_VBR | OBD_CONNECT_FULL20 |
 211                                   OBD_CONNECT_64BITHASH |
 212                                   OBD_CONNECT_EINPROGRESS |
 213                                   OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE |
 214                                   OBD_CONNECT_LAYOUTLOCK | OBD_CONNECT_PINGLESS|
 215                                   OBD_CONNECT_MAX_EASIZE |
 216                                   OBD_CONNECT_FLOCK_DEAD |
 217                                   OBD_CONNECT_DISP_STRIPE | OBD_CONNECT_LFSCK |
 218                                   OBD_CONNECT_OPEN_BY_FID |
 219                                   OBD_CONNECT_DIR_STRIPE |
 220                                   OBD_CONNECT_BULK_MBITS |
 221                                   OBD_CONNECT_SUBTREE |
 222                                   OBD_CONNECT_FLAGS2;
 223
 224         data->ocd_connect_flags2 = 0;
 225
 226 #ifdef HAVE_LRU_RESIZE_SUPPORT
 227         if (sbi->ll_flags & LL_SBI_LRU_RESIZE)
 228                 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
 229 #endif
 230 #ifdef CONFIG_FS_POSIX_ACL
 231         data->ocd_connect_flags |= OBD_CONNECT_ACL | OBD_CONNECT_UMASK;
 232 #endif
 233
 234         if (OBD_FAIL_CHECK(OBD_FAIL_MDC_LIGHTWEIGHT))
 235                 /* flag mdc connection as lightweight, only used for test
 236                  * purpose, use with care */
 237                 data->ocd_connect_flags |= OBD_CONNECT_LIGHTWEIGHT;
 238
 239         data->ocd_ibits_known = MDS_INODELOCK_FULL;
 240         data->ocd_version = LUSTRE_VERSION_CODE;
 241
 242         if (sb->s_flags & MS_RDONLY)
 243                 data->ocd_connect_flags |= OBD_CONNECT_RDONLY;
 244         if (sbi->ll_flags & LL_SBI_USER_XATTR)
 245                 data->ocd_connect_flags |= OBD_CONNECT_XATTR;
 246
 247         if (sbi->ll_flags & LL_SBI_FLOCK)
 248                 sbi->ll_fop = &ll_file_operations_flock;
 249         else if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
 250                 sbi->ll_fop = &ll_file_operations;
 251         else
 252                 sbi->ll_fop = &ll_file_operations_noflock;
 253
 254         /* always ping even if server suppress_pings */
 255         if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
 256                 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
 257
 258 #ifdef HAVE_SECURITY_DENTRY_INIT_SECURITY
 259         data->ocd_connect_flags2 |= OBD_CONNECT2_FILE_SECCTX;
 260 #endif /* HAVE_SECURITY_DENTRY_INIT_SECURITY */
 261
 262         data->ocd_brw_size = MD_MAX_BRW_SIZE;
 263
 264         err = obd_connect(NULL, &sbi->ll_md_exp, obd, &sbi->ll_sb_uuid, data, NULL);
 265         if (err == -EBUSY) {
 266                 LCONSOLE_ERROR_MSG(0x14f, "An MDT (md %s) is performing "
 267                                    "recovery, of which this client is not a "
 268                                    "part. Please wait for recovery to complete,"
 269                                    " abort, or time out.\n", md);
 270                 GOTO(out, err);
 271         } else if (err) {
 272                 CERROR("cannot connect to %s: rc = %d\n", md, err);
 273                 GOTO(out, err);
 274         }
 275
 276         sbi->ll_md_exp->exp_connect_data = *data;
 277
 278         err = obd_fid_init(sbi->ll_md_exp->exp_obd, sbi->ll_md_exp,
 279                            LUSTRE_SEQ_METADATA);
 280         if (err) {
 281                 CERROR("%s: Can't init metadata layer FID infrastructure, "
 282                        "rc = %d\n", sbi->ll_md_exp->exp_obd->obd_name, err);
 283                 GOTO(out_md, err);
 284         }
 285
 286         /* For mount, we only need fs info from MDT0, and also in DNE, it
 287          * can make sure the client can be mounted as long as MDT0 is
 288          * avaible */
 289         err = obd_statfs(NULL, sbi->ll_md_exp, osfs,
 290                         cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
 291                         OBD_STATFS_FOR_MDT0);
 292         if (err)
 293                 GOTO(out_md_fid, err);
 294
 295         /* This needs to be after statfs to ensure connect has finished.
 296          * Note that "data" does NOT contain the valid connect reply.
 297          * If connecting to a 1.8 server there will be no LMV device, so
 298          * we can access the MDC export directly and exp_connect_flags will
 299          * be non-zero, but if accessing an upgraded 2.1 server it will
 300          * have the correct flags filled in.
 301          * XXX: fill in the LMV exp_connect_flags from MDC(s). */
 302         valid = exp_connect_flags(sbi->ll_md_exp) & CLIENT_CONNECT_MDT_REQD;
 303         if (exp_connect_flags(sbi->ll_md_exp) != 0 &&
 304             valid != CLIENT_CONNECT_MDT_REQD) {
 305                 char *buf;
 306
 307                 OBD_ALLOC_WAIT(buf, PAGE_CACHE_SIZE);
 308                 obd_connect_flags2str(buf, PAGE_CACHE_SIZE,
 309                                       valid ^ CLIENT_CONNECT_MDT_REQD, 0, ",");
 310                 LCONSOLE_ERROR_MSG(0x170, "Server %s does not support "
 311                                    "feature(s) needed for correct operation "
 312                                    "of this client (%s). Please upgrade "
 313                                    "server or downgrade client.\n",
 314                                    sbi->ll_md_exp->exp_obd->obd_name, buf);
 315                 OBD_FREE(buf, PAGE_CACHE_SIZE);
 316                 GOTO(out_md_fid, err = -EPROTO);
 317         }
 318
 319         size = sizeof(*data);
 320         err = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_CONN_DATA),
 321                            KEY_CONN_DATA,  &size, data);
 322         if (err) {
 323                 CERROR("%s: Get connect data failed: rc = %d\n",
 324                        sbi->ll_md_exp->exp_obd->obd_name, err);
 325                 GOTO(out_md_fid, err);
 326         }
 327
 328         LASSERT(osfs->os_bsize);
 329         sb->s_blocksize = osfs->os_bsize;
 330         sb->s_blocksize_bits = log2(osfs->os_bsize);
 331         sb->s_magic = LL_SUPER_MAGIC;
 332         sb->s_maxbytes = MAX_LFS_FILESIZE;
 333         sbi->ll_namelen = osfs->os_namelen;
 334
 335         if ((sbi->ll_flags & LL_SBI_USER_XATTR) &&
 336             !(data->ocd_connect_flags & OBD_CONNECT_XATTR)) {
 337                 LCONSOLE_INFO("Disabling user_xattr feature because "
 338                               "it is not supported on the server\n");
 339                 sbi->ll_flags &= ~LL_SBI_USER_XATTR;
 340         }
 341
 342         if (data->ocd_connect_flags & OBD_CONNECT_ACL) {
 343 #ifdef MS_POSIXACL
 344                 sb->s_flags |= MS_POSIXACL;
 345 #endif
 346                 sbi->ll_flags |= LL_SBI_ACL;
 347         } else {
 348                 LCONSOLE_INFO("client wants to enable acl, but mdt not!\n");
 349 #ifdef MS_POSIXACL
 350                 sb->s_flags &= ~MS_POSIXACL;
 351 #endif
 352                 sbi->ll_flags &= ~LL_SBI_ACL;
 353         }
 354
 355         if (data->ocd_connect_flags & OBD_CONNECT_64BITHASH)
 356                 sbi->ll_flags |= LL_SBI_64BIT_HASH;
 357
 358         if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE)
 359                 sbi->ll_md_brw_pages = data->ocd_brw_size >> PAGE_CACHE_SHIFT;
 360         else
 361                 sbi->ll_md_brw_pages = 1;
 362
 363         if (data->ocd_connect_flags & OBD_CONNECT_LAYOUTLOCK)
 364                 sbi->ll_flags |= LL_SBI_LAYOUT_LOCK;
 365
 366         if (obd_connect_has_secctx(data))
 367                 sbi->ll_flags |= LL_SBI_FILE_SECCTX;
 368
 369         if (data->ocd_ibits_known & MDS_INODELOCK_XATTR) {
 370                 if (!(data->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)) {
 371                         LCONSOLE_INFO("%s: disabling xattr cache due to "
 372                                       "unknown maximum xattr size.\n", dt);
 373                 } else {
 374                         sbi->ll_flags |= LL_SBI_XATTR_CACHE;
 375                         sbi->ll_xattr_cache_enabled = 1;
 376                 }
 377         }
 378
 379         obd = class_name2obd(dt);
 380         if (!obd) {
 381                 CERROR("DT %s: not setup or attached\n", dt);
 382                 GOTO(out_md_fid, err = -ENODEV);
 383         }
 384
 385         /* pass client page size via ocd_grant_blkbits, the server should report
 386          * back its backend blocksize for grant calculation purpose */
 387         data->ocd_grant_blkbits = PAGE_SHIFT;
 388
 389         data->ocd_connect_flags = OBD_CONNECT_GRANT | OBD_CONNECT_VERSION |
 390                                   OBD_CONNECT_REQPORTAL | OBD_CONNECT_BRW_SIZE |
 391                                   OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
 392                                   OBD_CONNECT_SRVLOCK | OBD_CONNECT_TRUNCLOCK|
 393                                   OBD_CONNECT_AT | OBD_CONNECT_OSS_CAPA |
 394                                   OBD_CONNECT_VBR | OBD_CONNECT_FULL20 |
 395                                   OBD_CONNECT_64BITHASH | OBD_CONNECT_MAXBYTES |
 396                                   OBD_CONNECT_EINPROGRESS |
 397                                   OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE |
 398                                   OBD_CONNECT_LAYOUTLOCK |
 399                                   OBD_CONNECT_PINGLESS | OBD_CONNECT_LFSCK |
 400                                   OBD_CONNECT_BULK_MBITS;
 401
 402         data->ocd_connect_flags2 = 0;
 403
 404         if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_GRANT_PARAM))
 405                 data->ocd_connect_flags |= OBD_CONNECT_GRANT_PARAM;
 406
 407         if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_CKSUM)) {
 408                 /* OBD_CONNECT_CKSUM should always be set, even if checksums are
 409                  * disabled by default, because it can still be enabled on the
 410                  * fly via /proc. As a consequence, we still need to come to an
 411                  * agreement on the supported algorithms at connect time */
 412                 data->ocd_connect_flags |= OBD_CONNECT_CKSUM;
 413
 414                 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_CKSUM_ADLER_ONLY))
 415                         data->ocd_cksum_types = OBD_CKSUM_ADLER;
 416                 else
 417                         data->ocd_cksum_types = cksum_types_supported_client();
 418         }
 419
 420 #ifdef HAVE_LRU_RESIZE_SUPPORT
 421         data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
 422 #endif
 423         /* always ping even if server suppress_pings */
 424         if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
 425                 data->ocd_connect_flags &= ~OBD_CONNECT_PINGLESS;
 426
 427         CDEBUG(D_RPCTRACE, "ocd_connect_flags: %#llx ocd_version: %d "
 428                "ocd_grant: %d\n", data->ocd_connect_flags,
 429                data->ocd_version, data->ocd_grant);
 430
 431         obd->obd_upcall.onu_owner = &sbi->ll_lco;
 432         obd->obd_upcall.onu_upcall = cl_ocd_update;
 433
 434         data->ocd_brw_size = DT_MAX_BRW_SIZE;
 435
 436         err = obd_connect(NULL, &sbi->ll_dt_exp, obd, &sbi->ll_sb_uuid, data,
 437                           NULL);
 438         if (err == -EBUSY) {
 439                 LCONSOLE_ERROR_MSG(0x150, "An OST (dt %s) is performing "
 440                                    "recovery, of which this client is not a "
 441                                    "part.  Please wait for recovery to "
 442                                    "complete, abort, or time out.\n", dt);
 443                 GOTO(out_md, err);
 444         } else if (err) {
 445                 CERROR("%s: Cannot connect to %s: rc = %d\n",
 446                        sbi->ll_dt_exp->exp_obd->obd_name, dt, err);
 447                 GOTO(out_md, err);
 448         }
 449
 450         sbi->ll_dt_exp->exp_connect_data = *data;
 451
 452         err = obd_fid_init(sbi->ll_dt_exp->exp_obd, sbi->ll_dt_exp,
 453                            LUSTRE_SEQ_METADATA);
 454         if (err) {
 455                 CERROR("%s: Can't init data layer FID infrastructure, "
 456                        "rc = %d\n", sbi->ll_dt_exp->exp_obd->obd_name, err);
 457                 GOTO(out_dt, err);
 458         }
 459
 460         mutex_lock(&sbi->ll_lco.lco_lock);
 461         sbi->ll_lco.lco_flags = data->ocd_connect_flags;
 462         sbi->ll_lco.lco_md_exp = sbi->ll_md_exp;
 463         sbi->ll_lco.lco_dt_exp = sbi->ll_dt_exp;
 464         mutex_unlock(&sbi->ll_lco.lco_lock);
 465
 466         fid_zero(&sbi->ll_root_fid);
 467         err = md_get_root(sbi->ll_md_exp, get_mount_fileset(sb),
 468                            &sbi->ll_root_fid);
 469         if (err) {
 470                 CERROR("cannot mds_connect: rc = %d\n", err);
 471                 GOTO(out_lock_cn_cb, err);
 472         }
 473         if (!fid_is_sane(&sbi->ll_root_fid)) {
 474                 CERROR("%s: Invalid root fid "DFID" during mount\n",
 475                        sbi->ll_md_exp->exp_obd->obd_name,
 476                        PFID(&sbi->ll_root_fid));
 477                 GOTO(out_lock_cn_cb, err = -EINVAL);
 478         }
 479         CDEBUG(D_SUPER, "rootfid "DFID"\n", PFID(&sbi->ll_root_fid));
 480
 481         sb->s_op = &lustre_super_operations;
 482 #if THREAD_SIZE >= 8192 /*b=17630*/
 483         sb->s_export_op = &lustre_export_operations;
 484 #endif
 485
 486         /* make root inode
 487          * XXX: move this to after cbd setup? */
 488         valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS | OBD_MD_FLMODEASIZE;
 489         if (sbi->ll_flags & LL_SBI_ACL)
 490                 valid |= OBD_MD_FLACL;
 491
 492         OBD_ALLOC_PTR(op_data);
 493         if (op_data == NULL)
 494                 GOTO(out_lock_cn_cb, err = -ENOMEM);
 495
 496         op_data->op_fid1 = sbi->ll_root_fid;
 497         op_data->op_mode = 0;
 498         op_data->op_valid = valid;
 499
 500         err = md_getattr(sbi->ll_md_exp, op_data, &request);
 501
 502         OBD_FREE_PTR(op_data);
 503         if (err) {
 504                 CERROR("%s: md_getattr failed for root: rc = %d\n",
 505                        sbi->ll_md_exp->exp_obd->obd_name, err);
 506                 GOTO(out_lock_cn_cb, err);
 507         }
 508
 509         err = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
 510                                sbi->ll_md_exp, &lmd);
 511         if (err) {
 512                 CERROR("failed to understand root inode md: rc = %d\n", err);
 513                 ptlrpc_req_finished(request);
 514                 GOTO(out_lock_cn_cb, err);
 515         }
 516
 517         LASSERT(fid_is_sane(&sbi->ll_root_fid));
 518         root = ll_iget(sb, cl_fid_build_ino(&sbi->ll_root_fid,
 519                                             sbi->ll_flags & LL_SBI_32BIT_API),
 520                        &lmd);
 521         md_free_lustre_md(sbi->ll_md_exp, &lmd);
 522         ptlrpc_req_finished(request);
 523
 524         if (IS_ERR(root)) {
 525 #ifdef CONFIG_FS_POSIX_ACL
 526                 if (lmd.posix_acl) {
 527                         posix_acl_release(lmd.posix_acl);
 528                         lmd.posix_acl = NULL;
 529                 }
 530 #endif
 531                 err = IS_ERR(root) ? PTR_ERR(root) : -EBADF;
 532                 root = NULL;
 533                 CERROR("lustre_lite: bad iget4 for root\n");
 534                 GOTO(out_root, err);
 535         }
 536
 537         checksum = sbi->ll_flags & LL_SBI_CHECKSUM;
 538         err = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
 539                                  KEY_CHECKSUM, sizeof(checksum), &checksum,
 540                                  NULL);
 541         if (err) {
 542                 CERROR("%s: Set checksum failed: rc = %d\n",
 543                        sbi->ll_dt_exp->exp_obd->obd_name, err);
 544                 GOTO(out_root, err);
 545         }
 546         cl_sb_init(sb);
 547
 548         err = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CACHE_SET),
 549                                  KEY_CACHE_SET, sizeof(*sbi->ll_cache),
 550                                  sbi->ll_cache, NULL);
 551         if (err) {
 552                 CERROR("%s: Set cache_set failed: rc = %d\n",
 553                        sbi->ll_dt_exp->exp_obd->obd_name, err);
 554                 GOTO(out_root, err);
 555         }
 556
 557         sb->s_root = d_make_root(root);
 558         if (sb->s_root == NULL) {
 559                 CERROR("%s: can't make root dentry\n",
 560                         ll_get_fsname(sb, NULL, 0));
 561                 GOTO(out_root, err = -ENOMEM);
 562         }
 563 #ifdef HAVE_DCACHE_LOCK
 564         sb->s_root->d_op = &ll_d_ops;
 565 #endif
 566
 567         sbi->ll_sdev_orig = sb->s_dev;
 568
 569         /* We set sb->s_dev equal on all lustre clients in order to support
 570          * NFS export clustering.  NFSD requires that the FSID be the same
 571          * on all clients. */
 572         /* s_dev is also used in lt_compare() to compare two fs, but that is
 573          * only a node-local comparison. */
 574         uuid = obd_get_uuid(sbi->ll_md_exp);
 575         if (uuid != NULL)
 576                 sb->s_dev = get_uuid2int(uuid->uuid, strlen(uuid->uuid));
 577
 578         if (data != NULL)
 579                 OBD_FREE_PTR(data);
 580         if (osfs != NULL)
 581                 OBD_FREE_PTR(osfs);
 582         if (proc_lustre_fs_root != NULL) {
 583                 err = lprocfs_register_mountpoint(proc_lustre_fs_root, sb,
 584                                                   dt, md);
 585                 if (err < 0) {
 586                         CERROR("%s: could not register mount in lprocfs: "
 587                                "rc = %d\n", ll_get_fsname(sb, NULL, 0), err);
 588                         err = 0;
 589                 }
 590         }
 591
 592         RETURN(err);
 593 out_root:
 594         if (root)
 595                 iput(root);
 596 out_lock_cn_cb:
 597         obd_fid_fini(sbi->ll_dt_exp->exp_obd);
 598 out_dt:
 599         obd_disconnect(sbi->ll_dt_exp);
 600         sbi->ll_dt_exp = NULL;
 601 out_md_fid:
 602         obd_fid_fini(sbi->ll_md_exp->exp_obd);
 603 out_md:
 604         obd_disconnect(sbi->ll_md_exp);
 605         sbi->ll_md_exp = NULL;
 606 out:
 607         if (data != NULL)
 608                 OBD_FREE_PTR(data);
 609         if (osfs != NULL)
 610                 OBD_FREE_PTR(osfs);
 611         return err;
 612 }
 613
 614 int ll_get_max_mdsize(struct ll_sb_info *sbi, int *lmmsize)
 615 {
 616         int size, rc;
 617
 618         size = sizeof(*lmmsize);
 619         rc = obd_get_info(NULL, sbi->ll_dt_exp, sizeof(KEY_MAX_EASIZE),
 620                           KEY_MAX_EASIZE, &size, lmmsize);
 621         if (rc != 0) {
 622                 CERROR("%s: cannot get max LOV EA size: rc = %d\n",
 623                        sbi->ll_dt_exp->exp_obd->obd_name, rc);
 624                 RETURN(rc);
 625         }
 626
 627         size = sizeof(int);
 628         rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_MAX_EASIZE),
 629                           KEY_MAX_EASIZE, &size, lmmsize);
 630         if (rc)
 631                 CERROR("Get max mdsize error rc %d\n", rc);
 632
 633         RETURN(rc);
 634 }
 635
 636 /**
 637  * Get the value of the default_easize parameter.
 638  *
 639  * \see client_obd::cl_default_mds_easize
 640  *
 641  * \param[in] sbi       superblock info for this filesystem
 642  * \param[out] lmmsize  pointer to storage location for value
 643  *
 644  * \retval 0            on success
 645  * \retval negative     negated errno on failure
 646  */
 647 int ll_get_default_mdsize(struct ll_sb_info *sbi, int *lmmsize)
 648 {
 649         int size, rc;
 650
 651         size = sizeof(int);
 652         rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_DEFAULT_EASIZE),
 653                          KEY_DEFAULT_EASIZE, &size, lmmsize);
 654         if (rc)
 655                 CERROR("Get default mdsize error rc %d\n", rc);
 656
 657         RETURN(rc);
 658 }
 659
 660 /**
 661  * Set the default_easize parameter to the given value.
 662  *
 663  * \see client_obd::cl_default_mds_easize
 664  *
 665  * \param[in] sbi       superblock info for this filesystem
 666  * \param[in] lmmsize   the size to set
 667  *
 668  * \retval 0            on success
 669  * \retval negative     negated errno on failure
 670  */
 671 int ll_set_default_mdsize(struct ll_sb_info *sbi, int lmmsize)
 672 {
 673         int rc;
 674
 675         if (lmmsize < sizeof(struct lov_mds_md) ||
 676             lmmsize > OBD_MAX_DEFAULT_EA_SIZE)
 677                 return -EINVAL;
 678
 679         rc = obd_set_info_async(NULL, sbi->ll_md_exp,
 680                                 sizeof(KEY_DEFAULT_EASIZE), KEY_DEFAULT_EASIZE,
 681                                 sizeof(int), &lmmsize, NULL);
 682
 683         RETURN(rc);
 684 }
 685
 686 static void ll_dump_inode(struct inode *inode)
 687 {
 688         struct ll_d_hlist_node *tmp;
 689         int dentry_count = 0;
 690
 691         LASSERT(inode != NULL);
 692
 693         ll_d_hlist_for_each(tmp, &inode->i_dentry)
 694                 dentry_count++;
 695
 696         CERROR("%s: inode %p dump: dev=%s fid="DFID
 697                " mode=%o count=%u, %d dentries\n",
 698                ll_get_fsname(inode->i_sb, NULL, 0), inode,
 699                ll_i2mdexp(inode)->exp_obd->obd_name, PFID(ll_inode2fid(inode)),
 700                inode->i_mode, atomic_read(&inode->i_count), dentry_count);
 701 }
 702
 703 void lustre_dump_dentry(struct dentry *dentry, int recur)
 704 {
 705         struct list_head *tmp;
 706         int subdirs = 0;
 707
 708         LASSERT(dentry != NULL);
 709
 710         list_for_each(tmp, &dentry->d_subdirs)
 711                 subdirs++;
 712
 713         CERROR("dentry %p dump: name=%.*s parent=%.*s (%p), inode=%p, count=%u,"
 714                " flags=0x%x, fsdata=%p, %d subdirs\n", dentry,
 715                dentry->d_name.len, dentry->d_name.name,
 716                dentry->d_parent->d_name.len, dentry->d_parent->d_name.name,
 717                dentry->d_parent, dentry->d_inode, ll_d_count(dentry),
 718                dentry->d_flags, dentry->d_fsdata, subdirs);
 719         if (dentry->d_inode != NULL)
 720                 ll_dump_inode(dentry->d_inode);
 721
 722         if (recur == 0)
 723                 return;
 724
 725         list_for_each(tmp, &dentry->d_subdirs) {
 726                 struct dentry *d = list_entry(tmp, struct dentry, d_child);
 727                 lustre_dump_dentry(d, recur - 1);
 728         }
 729 }
 730
 731 static void client_common_put_super(struct super_block *sb)
 732 {
 733         struct ll_sb_info *sbi = ll_s2sbi(sb);
 734         ENTRY;
 735
 736         cl_sb_fini(sb);
 737
 738         obd_fid_fini(sbi->ll_dt_exp->exp_obd);
 739         obd_disconnect(sbi->ll_dt_exp);
 740         sbi->ll_dt_exp = NULL;
 741
 742         lprocfs_unregister_mountpoint(sbi);
 743
 744         obd_fid_fini(sbi->ll_md_exp->exp_obd);
 745         obd_disconnect(sbi->ll_md_exp);
 746         sbi->ll_md_exp = NULL;
 747
 748         EXIT;
 749 }
 750
 751 void ll_kill_super(struct super_block *sb)
 752 {
 753         struct ll_sb_info *sbi;
 754         ENTRY;
 755
 756         /* not init sb ?*/
 757         if (!(sb->s_flags & MS_ACTIVE))
 758                 return;
 759
 760         sbi = ll_s2sbi(sb);
 761         /* we need restore s_dev from changed for clustred NFS before put_super
 762          * because new kernels have cached s_dev and change sb->s_dev in
 763          * put_super not affected real removing devices */
 764         if (sbi) {
 765                 sb->s_dev = sbi->ll_sdev_orig;
 766                 sbi->ll_umounting = 1;
 767
 768                 /* wait running statahead threads to quit */
 769                 while (atomic_read(&sbi->ll_sa_running) > 0) {
 770                         set_current_state(TASK_UNINTERRUPTIBLE);
 771                         schedule_timeout(msecs_to_jiffies(MSEC_PER_SEC >> 3));
 772                 }
 773         }
 774
 775         EXIT;
 776 }
 777
 778 static inline int ll_set_opt(const char *opt, char *data, int fl)
 779 {
 780         if (strncmp(opt, data, strlen(opt)) != 0)
 781                 return(0);
 782         else
 783                 return(fl);
 784 }
 785
 786 /* non-client-specific mount options are parsed in lmd_parse */
 787 static int ll_options(char *options, int *flags)
 788 {
 789         int tmp;
 790         char *s1 = options, *s2;
 791         ENTRY;
 792
 793         if (!options)
 794                 RETURN(0);
 795
 796         CDEBUG(D_CONFIG, "Parsing opts %s\n", options);
 797
 798         while (*s1) {
 799                 CDEBUG(D_SUPER, "next opt=%s\n", s1);
 800                 tmp = ll_set_opt("nolock", s1, LL_SBI_NOLCK);
 801                 if (tmp) {
 802                         *flags |= tmp;
 803                         goto next;
 804                 }
 805                 tmp = ll_set_opt("flock", s1, LL_SBI_FLOCK);
 806                 if (tmp) {
 807                         *flags |= tmp;
 808                         goto next;
 809                 }
 810                 tmp = ll_set_opt("localflock", s1, LL_SBI_LOCALFLOCK);
 811                 if (tmp) {
 812                         *flags |= tmp;
 813                         goto next;
 814                 }
 815                 tmp = ll_set_opt("noflock", s1, LL_SBI_FLOCK|LL_SBI_LOCALFLOCK);
 816                 if (tmp) {
 817                         *flags &= ~tmp;
 818                         goto next;
 819                 }
 820                 tmp = ll_set_opt("user_xattr", s1, LL_SBI_USER_XATTR);
 821                 if (tmp) {
 822                         *flags |= tmp;
 823                         goto next;
 824                 }
 825                 tmp = ll_set_opt("nouser_xattr", s1, LL_SBI_USER_XATTR);
 826                 if (tmp) {
 827                         *flags &= ~tmp;
 828                         goto next;
 829                 }
 830                 tmp = ll_set_opt("context", s1, 1);
 831                 if (tmp)
 832                         goto next;
 833                 tmp = ll_set_opt("fscontext", s1, 1);
 834                 if (tmp)
 835                         goto next;
 836                 tmp = ll_set_opt("defcontext", s1, 1);
 837                 if (tmp)
 838                         goto next;
 839                 tmp = ll_set_opt("rootcontext", s1, 1);
 840                 if (tmp)
 841                         goto next;
 842                 tmp = ll_set_opt("user_fid2path", s1, LL_SBI_USER_FID2PATH);
 843                 if (tmp) {
 844                         *flags |= tmp;
 845                         goto next;
 846                 }
 847                 tmp = ll_set_opt("nouser_fid2path", s1, LL_SBI_USER_FID2PATH);
 848                 if (tmp) {
 849                         *flags &= ~tmp;
 850                         goto next;
 851                 }
 852
 853                 tmp = ll_set_opt("checksum", s1, LL_SBI_CHECKSUM);
 854                 if (tmp) {
 855                         *flags |= tmp;
 856                         goto next;
 857                 }
 858                 tmp = ll_set_opt("nochecksum", s1, LL_SBI_CHECKSUM);
 859                 if (tmp) {
 860                         *flags &= ~tmp;
 861                         goto next;
 862                 }
 863                 tmp = ll_set_opt("lruresize", s1, LL_SBI_LRU_RESIZE);
 864                 if (tmp) {
 865                         *flags |= tmp;
 866                         goto next;
 867                 }
 868                 tmp = ll_set_opt("nolruresize", s1, LL_SBI_LRU_RESIZE);
 869                 if (tmp) {
 870                         *flags &= ~tmp;
 871                         goto next;
 872                 }
 873                 tmp = ll_set_opt("lazystatfs", s1, LL_SBI_LAZYSTATFS);
 874                 if (tmp) {
 875                         *flags |= tmp;
 876                         goto next;
 877                 }
 878                 tmp = ll_set_opt("nolazystatfs", s1, LL_SBI_LAZYSTATFS);
 879                 if (tmp) {
 880                         *flags &= ~tmp;
 881                         goto next;
 882                 }
 883                 tmp = ll_set_opt("32bitapi", s1, LL_SBI_32BIT_API);
 884                 if (tmp) {
 885                         *flags |= tmp;
 886                         goto next;
 887                 }
 888                 tmp = ll_set_opt("verbose", s1, LL_SBI_VERBOSE);
 889                 if (tmp) {
 890                         *flags |= tmp;
 891                         goto next;
 892                 }
 893                 tmp = ll_set_opt("noverbose", s1, LL_SBI_VERBOSE);
 894                 if (tmp) {
 895                         *flags &= ~tmp;
 896                         goto next;
 897                 }
 898                 tmp = ll_set_opt("always_ping", s1, LL_SBI_ALWAYS_PING);
 899                 if (tmp) {
 900                         *flags |= tmp;
 901                         goto next;
 902                 }
 903                 LCONSOLE_ERROR_MSG(0x152, "Unknown option '%s', won't mount.\n",
 904                                    s1);
 905                 RETURN(-EINVAL);
 906
 907 next:
 908                 /* Find next opt */
 909                 s2 = strchr(s1, ',');
 910                 if (s2 == NULL)
 911                         break;
 912                 s1 = s2 + 1;
 913         }
 914         RETURN(0);
 915 }
 916
 917 void ll_lli_init(struct ll_inode_info *lli)
 918 {
 919         lli->lli_inode_magic = LLI_INODE_MAGIC;
 920         lli->lli_flags = 0;
 921         spin_lock_init(&lli->lli_lock);
 922         lli->lli_posix_acl = NULL;
 923         /* Do not set lli_fid, it has been initialized already. */
 924         fid_zero(&lli->lli_pfid);
 925         lli->lli_mds_read_och = NULL;
 926         lli->lli_mds_write_och = NULL;
 927         lli->lli_mds_exec_och = NULL;
 928         lli->lli_open_fd_read_count = 0;
 929         lli->lli_open_fd_write_count = 0;
 930         lli->lli_open_fd_exec_count = 0;
 931         mutex_init(&lli->lli_och_mutex);
 932         spin_lock_init(&lli->lli_agl_lock);
 933         spin_lock_init(&lli->lli_layout_lock);
 934         ll_layout_version_set(lli, CL_LAYOUT_GEN_NONE);
 935         lli->lli_clob = NULL;
 936
 937         init_rwsem(&lli->lli_xattrs_list_rwsem);
 938         mutex_init(&lli->lli_xattrs_enq_lock);
 939
 940         LASSERT(lli->lli_vfs_inode.i_mode != 0);
 941         if (S_ISDIR(lli->lli_vfs_inode.i_mode)) {
 942                 mutex_init(&lli->lli_readdir_mutex);
 943                 lli->lli_opendir_key = NULL;
 944                 lli->lli_sai = NULL;
 945                 spin_lock_init(&lli->lli_sa_lock);
 946                 lli->lli_opendir_pid = 0;
 947                 lli->lli_sa_enabled = 0;
 948                 lli->lli_def_stripe_offset = -1;
 949         } else {
 950                 mutex_init(&lli->lli_size_mutex);
 951                 lli->lli_symlink_name = NULL;
 952                 init_rwsem(&lli->lli_trunc_sem);
 953                 range_lock_tree_init(&lli->lli_write_tree);
 954                 init_rwsem(&lli->lli_glimpse_sem);
 955                 lli->lli_glimpse_time = 0;
 956                 INIT_LIST_HEAD(&lli->lli_agl_list);
 957                 lli->lli_agl_index = 0;
 958                 lli->lli_async_rc = 0;
 959         }
 960         mutex_init(&lli->lli_layout_mutex);
 961 }
 962
 963 static inline int ll_bdi_register(struct backing_dev_info *bdi)
 964 {
 965         static atomic_t ll_bdi_num = ATOMIC_INIT(0);
 966
 967         bdi->name = "lustre";
 968         return bdi_register(bdi, NULL, "lustre-%d",
 969                             atomic_inc_return(&ll_bdi_num));
 970 }
 971
 972 int ll_fill_super(struct super_block *sb, struct vfsmount *mnt)
 973 {
 974         struct lustre_profile *lprof = NULL;
 975         struct lustre_sb_info *lsi = s2lsi(sb);
 976         struct ll_sb_info *sbi;
 977         char  *dt = NULL, *md = NULL;
 978         char  *profilenm = get_profile_name(sb);
 979         struct config_llog_instance *cfg;
 980         /* %p for void* in printf needs 16+2 characters: 0xffffffffffffffff */
 981         const int instlen = sizeof(cfg->cfg_instance) * 2 + 2;
 982         int    err;
 983         ENTRY;
 984
 985         CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
 986
 987         OBD_ALLOC_PTR(cfg);
 988         if (cfg == NULL)
 989                 RETURN(-ENOMEM);
 990
 991         try_module_get(THIS_MODULE);
 992
 993         /* client additional sb info */
 994         lsi->lsi_llsbi = sbi = ll_init_sbi();
 995         if (!sbi) {
 996                 module_put(THIS_MODULE);
 997                 OBD_FREE_PTR(cfg);
 998                 RETURN(-ENOMEM);
 999         }
1000
1001         err = ll_options(lsi->lsi_lmd->lmd_opts, &sbi->ll_flags);
1002         if (err)
1003                 GOTO(out_free, err);
1004
1005         err = bdi_init(&lsi->lsi_bdi);
1006         if (err)
1007                 GOTO(out_free, err);
1008         lsi->lsi_flags |= LSI_BDI_INITIALIZED;
1009 #ifdef HAVE_BDI_CAP_MAP_COPY
1010         lsi->lsi_bdi.capabilities = BDI_CAP_MAP_COPY;
1011 #else
1012         lsi->lsi_bdi.capabilities = 0;
1013 #endif
1014         err = ll_bdi_register(&lsi->lsi_bdi);
1015         if (err)
1016                 GOTO(out_free, err);
1017
1018         sb->s_bdi = &lsi->lsi_bdi;
1019 #ifndef HAVE_DCACHE_LOCK
1020         /* kernel >= 2.6.38 store dentry operations in sb->s_d_op. */
1021         sb->s_d_op = &ll_d_ops;
1022 #endif
1023
1024         /* Generate a string unique to this super, in case some joker tries
1025            to mount the same fs at two mount points.
1026            Use the address of the super itself.*/
1027         cfg->cfg_instance = sb;
1028         cfg->cfg_uuid = lsi->lsi_llsbi->ll_sb_uuid;
1029         cfg->cfg_callback = class_config_llog_handler;
1030         /* set up client obds */
1031         err = lustre_process_log(sb, profilenm, cfg);
1032         if (err < 0)
1033                 GOTO(out_free, err);
1034
1035         /* Profile set with LCFG_MOUNTOPT so we can find our mdc and osc obds */
1036         lprof = class_get_profile(profilenm);
1037         if (lprof == NULL) {
1038                 LCONSOLE_ERROR_MSG(0x156, "The client profile '%s' could not be"
1039                                    " read from the MGS.  Does that filesystem "
1040                                    "exist?\n", profilenm);
1041                 GOTO(out_free, err = -EINVAL);
1042         }
1043         CDEBUG(D_CONFIG, "Found profile %s: mdc=%s osc=%s\n", profilenm,
1044                lprof->lp_md, lprof->lp_dt);
1045
1046         OBD_ALLOC(dt, strlen(lprof->lp_dt) + instlen + 2);
1047         if (!dt)
1048                 GOTO(out_free, err = -ENOMEM);
1049         sprintf(dt, "%s-%p", lprof->lp_dt, cfg->cfg_instance);
1050
1051         OBD_ALLOC(md, strlen(lprof->lp_md) + instlen + 2);
1052         if (!md)
1053                 GOTO(out_free, err = -ENOMEM);
1054         sprintf(md, "%s-%p", lprof->lp_md, cfg->cfg_instance);
1055
1056         /* connections, registrations, sb setup */
1057         err = client_common_fill_super(sb, md, dt, mnt);
1058         if (err < 0)
1059                 GOTO(out_free, err);
1060
1061         sbi->ll_client_common_fill_super_succeeded = 1;
1062
1063 out_free:
1064         if (md)
1065                 OBD_FREE(md, strlen(lprof->lp_md) + instlen + 2);
1066         if (dt)
1067                 OBD_FREE(dt, strlen(lprof->lp_dt) + instlen + 2);
1068         if (lprof != NULL)
1069                 class_put_profile(lprof);
1070         if (err)
1071                 ll_put_super(sb);
1072         else if (sbi->ll_flags & LL_SBI_VERBOSE)
1073                 LCONSOLE_WARN("Mounted %s\n", profilenm);
1074
1075         OBD_FREE_PTR(cfg);
1076         RETURN(err);
1077 } /* ll_fill_super */
1078
1079 void ll_put_super(struct super_block *sb)
1080 {
1081         struct config_llog_instance cfg, params_cfg;
1082         struct obd_device *obd;
1083         struct lustre_sb_info *lsi = s2lsi(sb);
1084         struct ll_sb_info *sbi = ll_s2sbi(sb);
1085         char *profilenm = get_profile_name(sb);
1086         long ccc_count;
1087         int next, force = 1, rc = 0;
1088         ENTRY;
1089
1090         CDEBUG(D_VFSTRACE, "VFS Op: sb %p - %s\n", sb, profilenm);
1091
1092         cfg.cfg_instance = sb;
1093         lustre_end_log(sb, profilenm, &cfg);
1094
1095         params_cfg.cfg_instance = sb;
1096         lustre_end_log(sb, PARAMS_FILENAME, &params_cfg);
1097
1098         if (sbi->ll_md_exp) {
1099                 obd = class_exp2obd(sbi->ll_md_exp);
1100                 if (obd)
1101                         force = obd->obd_force;
1102         }
1103
1104         /* Wait for unstable pages to be committed to stable storage */
1105         if (force == 0) {
1106                 struct l_wait_info lwi = LWI_INTR(LWI_ON_SIGNAL_NOOP, NULL);
1107                 rc = l_wait_event(sbi->ll_cache->ccc_unstable_waitq,
1108                         atomic_long_read(&sbi->ll_cache->ccc_unstable_nr) == 0,
1109                         &lwi);
1110         }
1111
1112         ccc_count = atomic_long_read(&sbi->ll_cache->ccc_unstable_nr);
1113         if (force == 0 && rc != -EINTR)
1114                 LASSERTF(ccc_count == 0, "count: %li\n", ccc_count);
1115
1116
1117         /* We need to set force before the lov_disconnect in
1118            lustre_common_put_super, since l_d cleans up osc's as well. */
1119         if (force) {
1120                 next = 0;
1121                 while ((obd = class_devices_in_group(&sbi->ll_sb_uuid,
1122                                                      &next)) != NULL) {
1123                         obd->obd_force = force;
1124                 }
1125         }
1126
1127         if (sbi->ll_client_common_fill_super_succeeded) {
1128                 /* Only if client_common_fill_super succeeded */
1129                 client_common_put_super(sb);
1130         }
1131
1132         next = 0;
1133         while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)) !=NULL) {
1134                 class_manual_cleanup(obd);
1135         }
1136
1137         if (sbi->ll_flags & LL_SBI_VERBOSE)
1138                 LCONSOLE_WARN("Unmounted %s\n", profilenm ? profilenm : "");
1139
1140         if (profilenm)
1141                 class_del_profile(profilenm);
1142
1143         if (lsi->lsi_flags & LSI_BDI_INITIALIZED) {
1144                 bdi_destroy(&lsi->lsi_bdi);
1145                 lsi->lsi_flags &= ~LSI_BDI_INITIALIZED;
1146         }
1147
1148         ll_free_sbi(sb);
1149         lsi->lsi_llsbi = NULL;
1150
1151         lustre_common_put_super(sb);
1152
1153         cl_env_cache_purge(~0);
1154
1155         module_put(THIS_MODULE);
1156
1157         EXIT;
1158 } /* client_put_super */
1159
1160 struct inode *ll_inode_from_resource_lock(struct ldlm_lock *lock)
1161 {
1162         struct inode *inode = NULL;
1163
1164         /* NOTE: we depend on atomic igrab() -bzzz */
1165         lock_res_and_lock(lock);
1166         if (lock->l_resource->lr_lvb_inode) {
1167                 struct ll_inode_info * lli;
1168                 lli = ll_i2info(lock->l_resource->lr_lvb_inode);
1169                 if (lli->lli_inode_magic == LLI_INODE_MAGIC) {
1170                         inode = igrab(lock->l_resource->lr_lvb_inode);
1171                 } else {
1172                         inode = lock->l_resource->lr_lvb_inode;
1173                         LDLM_DEBUG_LIMIT(inode->i_state & I_FREEING ?  D_INFO :
1174                                          D_WARNING, lock, "lr_lvb_inode %p is "
1175                                          "bogus: magic %08x",
1176                                          lock->l_resource->lr_lvb_inode,
1177                                          lli->lli_inode_magic);
1178                         inode = NULL;
1179                 }
1180         }
1181         unlock_res_and_lock(lock);
1182         return inode;
1183 }
1184
1185 void ll_dir_clear_lsm_md(struct inode *inode)
1186 {
1187         struct ll_inode_info *lli = ll_i2info(inode);
1188
1189         LASSERT(S_ISDIR(inode->i_mode));
1190
1191         if (lli->lli_lsm_md != NULL) {
1192                 lmv_free_memmd(lli->lli_lsm_md);
1193                 lli->lli_lsm_md = NULL;
1194         }
1195 }
1196
1197 static struct inode *ll_iget_anon_dir(struct super_block *sb,
1198                                       const struct lu_fid *fid,
1199                                       struct lustre_md *md)
1200 {
1201         struct ll_sb_info       *sbi = ll_s2sbi(sb);
1202         struct mdt_body         *body = md->body;
1203         struct inode            *inode;
1204         ino_t                   ino;
1205         ENTRY;
1206
1207         ino = cl_fid_build_ino(fid, sbi->ll_flags & LL_SBI_32BIT_API);
1208         inode = iget_locked(sb, ino);
1209         if (inode == NULL) {
1210                 CERROR("%s: failed get simple inode "DFID": rc = -ENOENT\n",
1211                        ll_get_fsname(sb, NULL, 0), PFID(fid));
1212                 RETURN(ERR_PTR(-ENOENT));
1213         }
1214
1215         if (inode->i_state & I_NEW) {
1216                 struct ll_inode_info *lli = ll_i2info(inode);
1217                 struct lmv_stripe_md *lsm = md->lmv;
1218
1219                 inode->i_mode = (inode->i_mode & ~S_IFMT) |
1220                                 (body->mbo_mode & S_IFMT);
1221                 LASSERTF(S_ISDIR(inode->i_mode), "Not slave inode "DFID"\n",
1222                          PFID(fid));
1223
1224                 LTIME_S(inode->i_mtime) = 0;
1225                 LTIME_S(inode->i_atime) = 0;
1226                 LTIME_S(inode->i_ctime) = 0;
1227                 inode->i_rdev = 0;
1228
1229 #ifdef HAVE_BACKING_DEV_INFO
1230                 /* initializing backing dev info. */
1231                 inode->i_mapping->backing_dev_info =
1232                                                 &s2lsi(inode->i_sb)->lsi_bdi;
1233 #endif
1234                 inode->i_op = &ll_dir_inode_operations;
1235                 inode->i_fop = &ll_dir_operations;
1236                 lli->lli_fid = *fid;
1237                 ll_lli_init(lli);
1238
1239                 LASSERT(lsm != NULL);
1240                 /* master object FID */
1241                 lli->lli_pfid = body->mbo_fid1;
1242                 CDEBUG(D_INODE, "lli %p slave "DFID" master "DFID"\n",
1243                        lli, PFID(fid), PFID(&lli->lli_pfid));
1244                 unlock_new_inode(inode);
1245         }
1246
1247         RETURN(inode);
1248 }
1249
1250 static int ll_init_lsm_md(struct inode *inode, struct lustre_md *md)
1251 {
1252         struct lu_fid *fid;
1253         struct lmv_stripe_md *lsm = md->lmv;
1254         int i;
1255
1256         LASSERT(lsm != NULL);
1257         /* XXX sigh, this lsm_root initialization should be in
1258          * LMV layer, but it needs ll_iget right now, so we
1259          * put this here right now. */
1260         for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
1261                 fid = &lsm->lsm_md_oinfo[i].lmo_fid;
1262                 LASSERT(lsm->lsm_md_oinfo[i].lmo_root == NULL);
1263                 /* Unfortunately ll_iget will call ll_update_inode,
1264                  * where the initialization of slave inode is slightly
1265                  * different, so it reset lsm_md to NULL to avoid
1266                  * initializing lsm for slave inode. */
1267                 /* For migrating inode, master stripe and master object will
1268                  * be same, so we only need assign this inode */
1269                 if (lsm->lsm_md_hash_type & LMV_HASH_FLAG_MIGRATION && i == 0)
1270                         lsm->lsm_md_oinfo[i].lmo_root = inode;
1271                 else
1272                         lsm->lsm_md_oinfo[i].lmo_root =
1273                                 ll_iget_anon_dir(inode->i_sb, fid, md);
1274
1275                 if (IS_ERR(lsm->lsm_md_oinfo[i].lmo_root)) {
1276                         int rc = PTR_ERR(lsm->lsm_md_oinfo[i].lmo_root);
1277
1278                         lsm->lsm_md_oinfo[i].lmo_root = NULL;
1279                         return rc;
1280                 }
1281         }
1282
1283         return 0;
1284 }
1285
1286 static inline int lli_lsm_md_eq(const struct lmv_stripe_md *lsm_md1,
1287                                 const struct lmv_stripe_md *lsm_md2)
1288 {
1289         return lsm_md1->lsm_md_magic == lsm_md2->lsm_md_magic &&
1290                lsm_md1->lsm_md_stripe_count == lsm_md2->lsm_md_stripe_count &&
1291                lsm_md1->lsm_md_master_mdt_index ==
1292                                         lsm_md2->lsm_md_master_mdt_index &&
1293                lsm_md1->lsm_md_hash_type == lsm_md2->lsm_md_hash_type &&
1294                lsm_md1->lsm_md_layout_version ==
1295                                         lsm_md2->lsm_md_layout_version &&
1296                strcmp(lsm_md1->lsm_md_pool_name,
1297                       lsm_md2->lsm_md_pool_name) == 0;
1298 }
1299
1300 static int ll_update_lsm_md(struct inode *inode, struct lustre_md *md)
1301 {
1302         struct ll_inode_info *lli = ll_i2info(inode);
1303         struct lmv_stripe_md *lsm = md->lmv;
1304         int     rc;
1305         ENTRY;
1306
1307         LASSERT(S_ISDIR(inode->i_mode));
1308         CDEBUG(D_INODE, "update lsm %p of "DFID"\n", lli->lli_lsm_md,
1309                PFID(ll_inode2fid(inode)));
1310
1311         /* no striped information from request. */
1312         if (lsm == NULL) {
1313                 if (lli->lli_lsm_md == NULL) {
1314                         RETURN(0);
1315                 } else if (lli->lli_lsm_md->lsm_md_hash_type &
1316                                                 LMV_HASH_FLAG_MIGRATION) {
1317                         /* migration is done, the temporay MIGRATE layout has
1318                          * been removed */
1319                         CDEBUG(D_INODE, DFID" finish migration.\n",
1320                                PFID(ll_inode2fid(inode)));
1321                         lmv_free_memmd(lli->lli_lsm_md);
1322                         lli->lli_lsm_md = NULL;
1323                         RETURN(0);
1324                 } else {
1325                         /* The lustre_md from req does not include stripeEA,
1326                          * see ll_md_setattr */
1327                         RETURN(0);
1328                 }
1329         }
1330
1331         /* set the directory layout */
1332         if (lli->lli_lsm_md == NULL) {
1333                 struct cl_attr  *attr;
1334
1335                 rc = ll_init_lsm_md(inode, md);
1336                 if (rc != 0)
1337                         RETURN(rc);
1338
1339                 /* set md->lmv to NULL, so the following free lustre_md
1340                  * will not free this lsm */
1341                 md->lmv = NULL;
1342                 lli->lli_lsm_md = lsm;
1343
1344                 OBD_ALLOC_PTR(attr);
1345                 if (attr == NULL)
1346                         RETURN(-ENOMEM);
1347
1348                 /* validate the lsm */
1349                 rc = md_merge_attr(ll_i2mdexp(inode), lsm, attr,
1350                                    ll_md_blocking_ast);
1351                 if (rc != 0) {
1352                         OBD_FREE_PTR(attr);
1353                         RETURN(rc);
1354                 }
1355
1356                 if (md->body->mbo_valid & OBD_MD_FLNLINK)
1357                         md->body->mbo_nlink = attr->cat_nlink;
1358                 if (md->body->mbo_valid & OBD_MD_FLSIZE)
1359                         md->body->mbo_size = attr->cat_size;
1360                 if (md->body->mbo_valid & OBD_MD_FLATIME)
1361                         md->body->mbo_atime = attr->cat_atime;
1362                 if (md->body->mbo_valid & OBD_MD_FLCTIME)
1363                         md->body->mbo_ctime = attr->cat_ctime;
1364                 if (md->body->mbo_valid & OBD_MD_FLMTIME)
1365                         md->body->mbo_mtime = attr->cat_mtime;
1366
1367                 OBD_FREE_PTR(attr);
1368
1369                 CDEBUG(D_INODE, "Set lsm %p magic %x to "DFID"\n", lsm,
1370                        lsm->lsm_md_magic, PFID(ll_inode2fid(inode)));
1371                 RETURN(0);
1372         }
1373
1374         /* Compare the old and new stripe information */
1375         if (!lsm_md_eq(lli->lli_lsm_md, lsm)) {
1376                 struct lmv_stripe_md    *old_lsm = lli->lli_lsm_md;
1377                 int                     idx;
1378
1379                 CERROR("%s: inode "DFID"(%p)'s lmv layout mismatch (%p)/(%p)"
1380                        "magic:0x%x/0x%x stripe count: %d/%d master_mdt: %d/%d"
1381                        "hash_type:0x%x/0x%x layout: 0x%x/0x%x pool:%s/%s\n",
1382                        ll_get_fsname(inode->i_sb, NULL, 0), PFID(&lli->lli_fid),
1383                        inode, lsm, old_lsm,
1384                        lsm->lsm_md_magic, old_lsm->lsm_md_magic,
1385                        lsm->lsm_md_stripe_count,
1386                        old_lsm->lsm_md_stripe_count,
1387                        lsm->lsm_md_master_mdt_index,
1388                        old_lsm->lsm_md_master_mdt_index,
1389                        lsm->lsm_md_hash_type, old_lsm->lsm_md_hash_type,
1390                        lsm->lsm_md_layout_version,
1391                        old_lsm->lsm_md_layout_version,
1392                        lsm->lsm_md_pool_name,
1393                        old_lsm->lsm_md_pool_name);
1394
1395                 for (idx = 0; idx < old_lsm->lsm_md_stripe_count; idx++) {
1396                         CERROR("%s: sub FIDs in old lsm idx %d, old: "DFID"\n",
1397                                ll_get_fsname(inode->i_sb, NULL, 0), idx,
1398                                PFID(&old_lsm->lsm_md_oinfo[idx].lmo_fid));
1399                 }
1400
1401                 for (idx = 0; idx < lsm->lsm_md_stripe_count; idx++) {
1402                         CERROR("%s: sub FIDs in new lsm idx %d, new: "DFID"\n",
1403                                ll_get_fsname(inode->i_sb, NULL, 0), idx,
1404                                PFID(&lsm->lsm_md_oinfo[idx].lmo_fid));
1405                 }
1406
1407                 RETURN(-EIO);
1408         }
1409
1410         RETURN(0);
1411 }
1412
1413 void ll_clear_inode(struct inode *inode)
1414 {
1415         struct ll_inode_info *lli = ll_i2info(inode);
1416         struct ll_sb_info *sbi = ll_i2sbi(inode);
1417         ENTRY;
1418
1419         CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
1420                PFID(ll_inode2fid(inode)), inode);
1421
1422         if (S_ISDIR(inode->i_mode)) {
1423                 /* these should have been cleared in ll_file_release */
1424                 LASSERT(lli->lli_opendir_key == NULL);
1425                 LASSERT(lli->lli_sai == NULL);
1426                 LASSERT(lli->lli_opendir_pid == 0);
1427         }
1428
1429         md_null_inode(sbi->ll_md_exp, ll_inode2fid(inode));
1430
1431         LASSERT(!lli->lli_open_fd_write_count);
1432         LASSERT(!lli->lli_open_fd_read_count);
1433         LASSERT(!lli->lli_open_fd_exec_count);
1434
1435         if (lli->lli_mds_write_och)
1436                 ll_md_real_close(inode, FMODE_WRITE);
1437         if (lli->lli_mds_exec_och)
1438                 ll_md_real_close(inode, FMODE_EXEC);
1439         if (lli->lli_mds_read_och)
1440                 ll_md_real_close(inode, FMODE_READ);
1441
1442         if (S_ISLNK(inode->i_mode) && lli->lli_symlink_name) {
1443                 OBD_FREE(lli->lli_symlink_name,
1444                          strlen(lli->lli_symlink_name) + 1);
1445                 lli->lli_symlink_name = NULL;
1446         }
1447
1448         ll_xattr_cache_destroy(inode);
1449
1450 #ifdef CONFIG_FS_POSIX_ACL
1451         if (lli->lli_posix_acl) {
1452                 LASSERT(atomic_read(&lli->lli_posix_acl->a_refcount) == 1);
1453                 posix_acl_release(lli->lli_posix_acl);
1454                 lli->lli_posix_acl = NULL;
1455         }
1456 #endif
1457         lli->lli_inode_magic = LLI_INODE_DEAD;
1458
1459         if (S_ISDIR(inode->i_mode))
1460                 ll_dir_clear_lsm_md(inode);
1461         else if (S_ISREG(inode->i_mode) && !is_bad_inode(inode))
1462                 LASSERT(list_empty(&lli->lli_agl_list));
1463
1464         /*
1465          * XXX This has to be done before lsm is freed below, because
1466          * cl_object still uses inode lsm.
1467          */
1468         cl_inode_fini(inode);
1469
1470         EXIT;
1471 }
1472
1473 static int ll_md_setattr(struct dentry *dentry, struct md_op_data *op_data)
1474 {
1475         struct lustre_md md;
1476         struct inode *inode = dentry->d_inode;
1477         struct ll_sb_info *sbi = ll_i2sbi(inode);
1478         struct ptlrpc_request *request = NULL;
1479         int rc, ia_valid;
1480         ENTRY;
1481
1482         op_data = ll_prep_md_op_data(op_data, inode, NULL, NULL, 0, 0,
1483                                      LUSTRE_OPC_ANY, NULL);
1484         if (IS_ERR(op_data))
1485                 RETURN(PTR_ERR(op_data));
1486
1487         rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, &request);
1488         if (rc) {
1489                 ptlrpc_req_finished(request);
1490                 if (rc == -ENOENT) {
1491                         clear_nlink(inode);
1492                         /* Unlinked special device node? Or just a race?
1493                          * Pretend we done everything. */
1494                         if (!S_ISREG(inode->i_mode) &&
1495                             !S_ISDIR(inode->i_mode)) {
1496                                 ia_valid = op_data->op_attr.ia_valid;
1497                                 op_data->op_attr.ia_valid &= ~TIMES_SET_FLAGS;
1498                                 rc = simple_setattr(dentry, &op_data->op_attr);
1499                                 op_data->op_attr.ia_valid = ia_valid;
1500                         }
1501                 } else if (rc != -EPERM && rc != -EACCES && rc != -ETXTBSY) {
1502                         CERROR("md_setattr fails: rc = %d\n", rc);
1503                 }
1504                 RETURN(rc);
1505         }
1506
1507         rc = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
1508                               sbi->ll_md_exp, &md);
1509         if (rc) {
1510                 ptlrpc_req_finished(request);
1511                 RETURN(rc);
1512         }
1513
1514         ia_valid = op_data->op_attr.ia_valid;
1515         /* inode size will be in ll_setattr_ost, can't do it now since dirty
1516          * cache is not cleared yet. */
1517         op_data->op_attr.ia_valid &= ~(TIMES_SET_FLAGS | ATTR_SIZE);
1518         if (S_ISREG(inode->i_mode))
1519                 inode_lock(inode);
1520         rc = simple_setattr(dentry, &op_data->op_attr);
1521         if (S_ISREG(inode->i_mode))
1522                 inode_unlock(inode);
1523         op_data->op_attr.ia_valid = ia_valid;
1524
1525         rc = ll_update_inode(inode, &md);
1526         ptlrpc_req_finished(request);
1527
1528         RETURN(rc);
1529 }
1530
1531 /* If this inode has objects allocated to it (lsm != NULL), then the OST
1532  * object(s) determine the file size and mtime.  Otherwise, the MDS will
1533  * keep these values until such a time that objects are allocated for it.
1534  * We do the MDS operations first, as it is checking permissions for us.
1535  * We don't to the MDS RPC if there is nothing that we want to store there,
1536  * otherwise there is no harm in updating mtime/atime on the MDS if we are
1537  * going to do an RPC anyways.
1538  *
1539  * If we are doing a truncate, we will send the mtime and ctime updates
1540  * to the OST with the punch RPC, otherwise we do an explicit setattr RPC.
1541  * I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE
1542  * at the same time.
1543  *
1544  * In case of HSMimport, we only set attr on MDS.
1545  */
1546 int ll_setattr_raw(struct dentry *dentry, struct iattr *attr, bool hsm_import)
1547 {
1548         struct inode *inode = dentry->d_inode;
1549         struct ll_inode_info *lli = ll_i2info(inode);
1550         struct md_op_data *op_data = NULL;
1551         int rc = 0;
1552         ENTRY;
1553
1554         CDEBUG(D_VFSTRACE, "%s: setattr inode "DFID"(%p) from %llu to %llu, "
1555                "valid %x, hsm_import %d\n",
1556                ll_get_fsname(inode->i_sb, NULL, 0), PFID(&lli->lli_fid),
1557                inode, i_size_read(inode), attr->ia_size, attr->ia_valid,
1558                hsm_import);
1559
1560         if (attr->ia_valid & ATTR_SIZE) {
1561                 /* Check new size against VFS/VM file size limit and rlimit */
1562                 rc = inode_newsize_ok(inode, attr->ia_size);
1563                 if (rc)
1564                         RETURN(rc);
1565
1566                 /* The maximum Lustre file size is variable, based on the
1567                  * OST maximum object size and number of stripes.  This
1568                  * needs another check in addition to the VFS check above. */
1569                 if (attr->ia_size > ll_file_maxbytes(inode)) {
1570                         CDEBUG(D_INODE,"file "DFID" too large %llu > %llu\n",
1571                                PFID(&lli->lli_fid), attr->ia_size,
1572                                ll_file_maxbytes(inode));
1573                         RETURN(-EFBIG);
1574                 }
1575
1576                 attr->ia_valid |= ATTR_MTIME | ATTR_CTIME;
1577         }
1578
1579         /* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */
1580         if (attr->ia_valid & TIMES_SET_FLAGS) {
1581                 if ((!uid_eq(current_fsuid(), inode->i_uid)) &&
1582                     !cfs_capable(CFS_CAP_FOWNER))
1583                         RETURN(-EPERM);
1584         }
1585
1586         /* We mark all of the fields "set" so MDS/OST does not re-set them */
1587         if (!(attr->ia_valid & ATTR_CTIME_SET) &&
1588             (attr->ia_valid & ATTR_CTIME)) {
1589                 attr->ia_ctime = CURRENT_TIME;
1590                 attr->ia_valid |= ATTR_CTIME_SET;
1591         }
1592         if (!(attr->ia_valid & ATTR_ATIME_SET) &&
1593             (attr->ia_valid & ATTR_ATIME)) {
1594                 attr->ia_atime = CURRENT_TIME;
1595                 attr->ia_valid |= ATTR_ATIME_SET;
1596         }
1597         if (!(attr->ia_valid & ATTR_MTIME_SET) &&
1598             (attr->ia_valid & ATTR_MTIME)) {
1599                 attr->ia_mtime = CURRENT_TIME;
1600                 attr->ia_valid |= ATTR_MTIME_SET;
1601         }
1602
1603         if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
1604                 CDEBUG(D_INODE, "setting mtime %lu, ctime %lu, now = %lu\n",
1605                        LTIME_S(attr->ia_mtime), LTIME_S(attr->ia_ctime),
1606                        cfs_time_current_sec());
1607
1608         if (S_ISREG(inode->i_mode)) {
1609                 if (attr->ia_valid & ATTR_SIZE)
1610                         inode_dio_write_done(inode);
1611                 inode_unlock(inode);
1612         }
1613
1614         /* We always do an MDS RPC, even if we're only changing the size;
1615          * only the MDS knows whether truncate() should fail with -ETXTBUSY */
1616
1617         OBD_ALLOC_PTR(op_data);
1618         if (op_data == NULL)
1619                 GOTO(out, rc = -ENOMEM);
1620
1621         if (!hsm_import && attr->ia_valid & ATTR_SIZE) {
1622                 /* If we are changing file size, file content is
1623                  * modified, flag it. */
1624                 attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE;
1625                 op_data->op_bias |= MDS_DATA_MODIFIED;
1626                 ll_file_clear_flag(lli, LLIF_DATA_MODIFIED);
1627         }
1628
1629         op_data->op_attr = *attr;
1630
1631         rc = ll_md_setattr(dentry, op_data);
1632         if (rc)
1633                 GOTO(out, rc);
1634
1635         if (!S_ISREG(inode->i_mode) || hsm_import)
1636                 GOTO(out, rc = 0);
1637
1638         if (attr->ia_valid & (ATTR_SIZE |
1639                               ATTR_ATIME | ATTR_ATIME_SET |
1640                               ATTR_MTIME | ATTR_MTIME_SET |
1641                               ATTR_CTIME | ATTR_CTIME_SET)) {
1642                 /* For truncate and utimes sending attributes to OSTs, setting
1643                  * mtime/atime to the past will be performed under PW [0:EOF]
1644                  * extent lock (new_size:EOF for truncate).  It may seem
1645                  * excessive to send mtime/atime updates to OSTs when not
1646                  * setting times to past, but it is necessary due to possible
1647                  * time de-synchronization between MDT inode and OST objects */
1648                 rc = cl_setattr_ost(lli->lli_clob, attr, 0);
1649         }
1650
1651         /* If the file was restored, it needs to set dirty flag.
1652          *
1653          * We've already sent MDS_DATA_MODIFIED flag in
1654          * ll_md_setattr() for truncate. However, the MDT refuses to
1655          * set the HS_DIRTY flag on released files, so we have to set
1656          * it again if the file has been restored. Please check how
1657          * LLIF_DATA_MODIFIED is set in vvp_io_setattr_fini().
1658          *
1659          * Please notice that if the file is not released, the previous
1660          * MDS_DATA_MODIFIED has taken effect and usually
1661          * LLIF_DATA_MODIFIED is not set(see vvp_io_setattr_fini()).
1662          * This way we can save an RPC for common open + trunc
1663          * operation. */
1664         if (ll_file_test_and_clear_flag(lli, LLIF_DATA_MODIFIED)) {
1665                 struct hsm_state_set hss = {
1666                         .hss_valid = HSS_SETMASK,
1667                         .hss_setmask = HS_DIRTY,
1668                 };
1669                 int rc2;
1670
1671                 rc2 = ll_hsm_state_set(inode, &hss);
1672                 /* truncate and write can happen at the same time, so that
1673                  * the file can be set modified even though the file is not
1674                  * restored from released state, and ll_hsm_state_set() is
1675                  * not applicable for the file, and rc2 < 0 is normal in this
1676                  * case. */
1677                 if (rc2 < 0)
1678                         CDEBUG(D_INFO, DFID "HSM set dirty failed: rc2 = %d\n",
1679                                PFID(ll_inode2fid(inode)), rc2);
1680         }
1681
1682         EXIT;
1683 out:
1684         if (op_data != NULL)
1685                 ll_finish_md_op_data(op_data);
1686
1687         if (S_ISREG(inode->i_mode)) {
1688                 inode_lock(inode);
1689                 if ((attr->ia_valid & ATTR_SIZE) && !hsm_import)
1690                         inode_dio_wait(inode);
1691         }
1692
1693         ll_stats_ops_tally(ll_i2sbi(inode), (attr->ia_valid & ATTR_SIZE) ?
1694                         LPROC_LL_TRUNC : LPROC_LL_SETATTR, 1);
1695
1696         return rc;
1697 }
1698
1699 int ll_setattr(struct dentry *de, struct iattr *attr)
1700 {
1701         int mode = de->d_inode->i_mode;
1702
1703         if ((attr->ia_valid & (ATTR_CTIME|ATTR_SIZE|ATTR_MODE)) ==
1704                               (ATTR_CTIME|ATTR_SIZE|ATTR_MODE))
1705                 attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE;
1706
1707         if (((attr->ia_valid & (ATTR_MODE|ATTR_FORCE|ATTR_SIZE)) ==
1708                                (ATTR_SIZE|ATTR_MODE)) &&
1709             (((mode & S_ISUID) && !(attr->ia_mode & S_ISUID)) ||
1710              (((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
1711               !(attr->ia_mode & S_ISGID))))
1712                 attr->ia_valid |= ATTR_FORCE;
1713
1714         if ((attr->ia_valid & ATTR_MODE) &&
1715             (mode & S_ISUID) &&
1716             !(attr->ia_mode & S_ISUID) &&
1717             !(attr->ia_valid & ATTR_KILL_SUID))
1718                 attr->ia_valid |= ATTR_KILL_SUID;
1719
1720         if ((attr->ia_valid & ATTR_MODE) &&
1721             ((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
1722             !(attr->ia_mode & S_ISGID) &&
1723             !(attr->ia_valid & ATTR_KILL_SGID))
1724                 attr->ia_valid |= ATTR_KILL_SGID;
1725
1726         return ll_setattr_raw(de, attr, false);
1727 }
1728
1729 int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
1730                        __u64 max_age, __u32 flags)
1731 {
1732         struct ll_sb_info *sbi = ll_s2sbi(sb);
1733         struct obd_statfs obd_osfs;
1734         int rc;
1735         ENTRY;
1736
1737         rc = obd_statfs(NULL, sbi->ll_md_exp, osfs, max_age, flags);
1738         if (rc) {
1739                 CERROR("md_statfs fails: rc = %d\n", rc);
1740                 RETURN(rc);
1741         }
1742
1743         osfs->os_type = sb->s_magic;
1744
1745         CDEBUG(D_SUPER, "MDC blocks %llu/%llu objects %llu/%llu\n",
1746                osfs->os_bavail, osfs->os_blocks, osfs->os_ffree,osfs->os_files);
1747
1748         if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
1749                 flags |= OBD_STATFS_NODELAY;
1750
1751         rc = obd_statfs_rqset(sbi->ll_dt_exp, &obd_osfs, max_age, flags);
1752         if (rc) {
1753                 CERROR("obd_statfs fails: rc = %d\n", rc);
1754                 RETURN(rc);
1755         }
1756
1757         CDEBUG(D_SUPER, "OSC blocks %llu/%llu objects %llu/%llu\n",
1758                obd_osfs.os_bavail, obd_osfs.os_blocks, obd_osfs.os_ffree,
1759                obd_osfs.os_files);
1760
1761         osfs->os_bsize = obd_osfs.os_bsize;
1762         osfs->os_blocks = obd_osfs.os_blocks;
1763         osfs->os_bfree = obd_osfs.os_bfree;
1764         osfs->os_bavail = obd_osfs.os_bavail;
1765
1766         /* If we don't have as many objects free on the OST as inodes
1767          * on the MDS, we reduce the total number of inodes to
1768          * compensate, so that the "inodes in use" number is correct.
1769          */
1770         if (obd_osfs.os_ffree < osfs->os_ffree) {
1771                 osfs->os_files = (osfs->os_files - osfs->os_ffree) +
1772                         obd_osfs.os_ffree;
1773                 osfs->os_ffree = obd_osfs.os_ffree;
1774         }
1775
1776         RETURN(rc);
1777 }
1778 int ll_statfs(struct dentry *de, struct kstatfs *sfs)
1779 {
1780         struct super_block *sb = de->d_sb;
1781         struct obd_statfs osfs;
1782         __u64 fsid = huge_encode_dev(sb->s_dev);
1783         int rc;
1784
1785         CDEBUG(D_VFSTRACE, "VFS Op: at %llu jiffies\n", get_jiffies_64());
1786         ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_STAFS, 1);
1787
1788         /* Some amount of caching on the client is allowed */
1789         rc = ll_statfs_internal(sb, &osfs,
1790                                 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
1791                                 0);
1792         if (rc)
1793                 return rc;
1794
1795         statfs_unpack(sfs, &osfs);
1796
1797         /* We need to downshift for all 32-bit kernels, because we can't
1798          * tell if the kernel is being called via sys_statfs64() or not.
1799          * Stop before overflowing f_bsize - in which case it is better
1800          * to just risk EOVERFLOW if caller is using old sys_statfs(). */
1801         if (sizeof(long) < 8) {
1802                 while (osfs.os_blocks > ~0UL && sfs->f_bsize < 0x40000000) {
1803                         sfs->f_bsize <<= 1;
1804
1805                         osfs.os_blocks >>= 1;
1806                         osfs.os_bfree >>= 1;
1807                         osfs.os_bavail >>= 1;
1808                 }
1809         }
1810
1811         sfs->f_blocks = osfs.os_blocks;
1812         sfs->f_bfree = osfs.os_bfree;
1813         sfs->f_bavail = osfs.os_bavail;
1814         sfs->f_fsid.val[0] = (__u32)fsid;
1815         sfs->f_fsid.val[1] = (__u32)(fsid >> 32);
1816         return 0;
1817 }
1818
1819 void ll_inode_size_lock(struct inode *inode)
1820 {
1821         struct ll_inode_info *lli;
1822
1823         LASSERT(!S_ISDIR(inode->i_mode));
1824
1825         lli = ll_i2info(inode);
1826         mutex_lock(&lli->lli_size_mutex);
1827 }
1828
1829 void ll_inode_size_unlock(struct inode *inode)
1830 {
1831         struct ll_inode_info *lli;
1832
1833         lli = ll_i2info(inode);
1834         mutex_unlock(&lli->lli_size_mutex);
1835 }
1836
1837 int ll_update_inode(struct inode *inode, struct lustre_md *md)
1838 {
1839         struct ll_inode_info *lli = ll_i2info(inode);
1840         struct mdt_body *body = md->body;
1841         struct ll_sb_info *sbi = ll_i2sbi(inode);
1842
1843         if (body->mbo_valid & OBD_MD_FLEASIZE)
1844                 cl_file_inode_init(inode, md);
1845
1846         if (S_ISDIR(inode->i_mode)) {
1847                 int     rc;
1848
1849                 rc = ll_update_lsm_md(inode, md);
1850                 if (rc != 0)
1851                         return rc;
1852         }
1853
1854 #ifdef CONFIG_FS_POSIX_ACL
1855         if (body->mbo_valid & OBD_MD_FLACL) {
1856                 spin_lock(&lli->lli_lock);
1857                 if (lli->lli_posix_acl)
1858                         posix_acl_release(lli->lli_posix_acl);
1859                 lli->lli_posix_acl = md->posix_acl;
1860                 spin_unlock(&lli->lli_lock);
1861         }
1862 #endif
1863         inode->i_ino = cl_fid_build_ino(&body->mbo_fid1,
1864                                         sbi->ll_flags & LL_SBI_32BIT_API);
1865         inode->i_generation = cl_fid_build_gen(&body->mbo_fid1);
1866
1867         if (body->mbo_valid & OBD_MD_FLATIME) {
1868                 if (body->mbo_atime > LTIME_S(inode->i_atime))
1869                         LTIME_S(inode->i_atime) = body->mbo_atime;
1870                 lli->lli_atime = body->mbo_atime;
1871         }
1872
1873         if (body->mbo_valid & OBD_MD_FLMTIME) {
1874                 if (body->mbo_mtime > LTIME_S(inode->i_mtime)) {
1875                         CDEBUG(D_INODE, "setting ino %lu mtime from %lu "
1876                                "to %llu\n", inode->i_ino,
1877                                LTIME_S(inode->i_mtime), body->mbo_mtime);
1878                         LTIME_S(inode->i_mtime) = body->mbo_mtime;
1879                 }
1880                 lli->lli_mtime = body->mbo_mtime;
1881         }
1882
1883         if (body->mbo_valid & OBD_MD_FLCTIME) {
1884                 if (body->mbo_ctime > LTIME_S(inode->i_ctime))
1885                         LTIME_S(inode->i_ctime) = body->mbo_ctime;
1886                 lli->lli_ctime = body->mbo_ctime;
1887         }
1888
1889         if (body->mbo_valid & OBD_MD_FLMODE)
1890                 inode->i_mode = (inode->i_mode & S_IFMT) |
1891                                 (body->mbo_mode & ~S_IFMT);
1892
1893         if (body->mbo_valid & OBD_MD_FLTYPE)
1894                 inode->i_mode = (inode->i_mode & ~S_IFMT) |
1895                                 (body->mbo_mode & S_IFMT);
1896
1897         LASSERT(inode->i_mode != 0);
1898         if (S_ISREG(inode->i_mode))
1899                 inode->i_blkbits = min(PTLRPC_MAX_BRW_BITS + 1,
1900                                        LL_MAX_BLKSIZE_BITS);
1901         else
1902                 inode->i_blkbits = inode->i_sb->s_blocksize_bits;
1903
1904         if (body->mbo_valid & OBD_MD_FLUID)
1905                 inode->i_uid = make_kuid(&init_user_ns, body->mbo_uid);
1906         if (body->mbo_valid & OBD_MD_FLGID)
1907                 inode->i_gid = make_kgid(&init_user_ns, body->mbo_gid);
1908         if (body->mbo_valid & OBD_MD_FLFLAGS)
1909                 inode->i_flags = ll_ext_to_inode_flags(body->mbo_flags);
1910         if (body->mbo_valid & OBD_MD_FLNLINK)
1911                 set_nlink(inode, body->mbo_nlink);
1912         if (body->mbo_valid & OBD_MD_FLRDEV)
1913                 inode->i_rdev = old_decode_dev(body->mbo_rdev);
1914
1915         if (body->mbo_valid & OBD_MD_FLID) {
1916                 /* FID shouldn't be changed! */
1917                 if (fid_is_sane(&lli->lli_fid)) {
1918                         LASSERTF(lu_fid_eq(&lli->lli_fid, &body->mbo_fid1),
1919                                  "Trying to change FID "DFID
1920                                  " to the "DFID", inode "DFID"(%p)\n",
1921                                  PFID(&lli->lli_fid), PFID(&body->mbo_fid1),
1922                                  PFID(ll_inode2fid(inode)), inode);
1923                 } else {
1924                         lli->lli_fid = body->mbo_fid1;
1925                 }
1926         }
1927
1928         LASSERT(fid_seq(&lli->lli_fid) != 0);
1929
1930         if (body->mbo_valid & OBD_MD_FLSIZE) {
1931                 i_size_write(inode, body->mbo_size);
1932
1933                 CDEBUG(D_VFSTRACE, "inode="DFID", updating i_size %llu\n",
1934                        PFID(ll_inode2fid(inode)),
1935                        (unsigned long long)body->mbo_size);
1936
1937                 if (body->mbo_valid & OBD_MD_FLBLOCKS)
1938                         inode->i_blocks = body->mbo_blocks;
1939         }
1940
1941         if (body->mbo_valid & OBD_MD_TSTATE) {
1942                 /* Set LLIF_FILE_RESTORING if restore ongoing and
1943                  * clear it when done to ensure to start again
1944                  * glimpsing updated attrs
1945                  */
1946                 if (body->mbo_t_state & MS_RESTORE)
1947                         ll_file_set_flag(lli, LLIF_FILE_RESTORING);
1948                 else
1949                         ll_file_clear_flag(lli, LLIF_FILE_RESTORING);
1950         }
1951
1952         return 0;
1953 }
1954
1955 int ll_read_inode2(struct inode *inode, void *opaque)
1956 {
1957         struct lustre_md *md = opaque;
1958         struct ll_inode_info *lli = ll_i2info(inode);
1959         int     rc;
1960         ENTRY;
1961
1962         CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
1963                PFID(&lli->lli_fid), inode);
1964
1965         /* Core attributes from the MDS first.  This is a new inode, and
1966          * the VFS doesn't zero times in the core inode so we have to do
1967          * it ourselves.  They will be overwritten by either MDS or OST
1968          * attributes - we just need to make sure they aren't newer. */
1969         LTIME_S(inode->i_mtime) = 0;
1970         LTIME_S(inode->i_atime) = 0;
1971         LTIME_S(inode->i_ctime) = 0;
1972         inode->i_rdev = 0;
1973         rc = ll_update_inode(inode, md);
1974         if (rc != 0)
1975                 RETURN(rc);
1976
1977         /* OIDEBUG(inode); */
1978
1979 #ifdef HAVE_BACKING_DEV_INFO
1980         /* initializing backing dev info. */
1981         inode->i_mapping->backing_dev_info = &s2lsi(inode->i_sb)->lsi_bdi;
1982 #endif
1983         if (S_ISREG(inode->i_mode)) {
1984                 struct ll_sb_info *sbi = ll_i2sbi(inode);
1985                 inode->i_op = &ll_file_inode_operations;
1986                 inode->i_fop = sbi->ll_fop;
1987                 inode->i_mapping->a_ops = (struct address_space_operations *)&ll_aops;
1988                 EXIT;
1989         } else if (S_ISDIR(inode->i_mode)) {
1990                 inode->i_op = &ll_dir_inode_operations;
1991                 inode->i_fop = &ll_dir_operations;
1992                 EXIT;
1993         } else if (S_ISLNK(inode->i_mode)) {
1994                 inode->i_op = &ll_fast_symlink_inode_operations;
1995                 EXIT;
1996         } else {
1997                 inode->i_op = &ll_special_inode_operations;
1998
1999                 init_special_inode(inode, inode->i_mode,
2000                                    inode->i_rdev);
2001
2002                 EXIT;
2003         }
2004
2005         return 0;
2006 }
2007
2008 void ll_delete_inode(struct inode *inode)
2009 {
2010         struct ll_inode_info *lli = ll_i2info(inode);
2011         ENTRY;
2012
2013         if (S_ISREG(inode->i_mode) && lli->lli_clob != NULL)
2014                 /* It is last chance to write out dirty pages,
2015                  * otherwise we may lose data while umount */
2016                 cl_sync_file_range(inode, 0, OBD_OBJECT_EOF, CL_FSYNC_LOCAL, 1);
2017
2018         truncate_inode_pages_final(&inode->i_data);
2019
2020         LASSERTF(inode->i_data.nrpages == 0, "inode="DFID"(%p) nrpages=%lu, "
2021                  "see https://jira.hpdd.intel.com/browse/LU-118\n",
2022                  PFID(ll_inode2fid(inode)), inode, inode->i_data.nrpages);
2023
2024 #ifdef HAVE_SBOPS_EVICT_INODE
2025         ll_clear_inode(inode);
2026 #endif
2027         clear_inode(inode);
2028
2029         EXIT;
2030 }
2031
2032 int ll_iocontrol(struct inode *inode, struct file *file,
2033                  unsigned int cmd, unsigned long arg)
2034 {
2035         struct ll_sb_info *sbi = ll_i2sbi(inode);
2036         struct ptlrpc_request *req = NULL;
2037         int rc, flags = 0;
2038         ENTRY;
2039
2040         switch(cmd) {
2041         case FSFILT_IOC_GETFLAGS: {
2042                 struct mdt_body *body;
2043                 struct md_op_data *op_data;
2044
2045                 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL,
2046                                              0, 0, LUSTRE_OPC_ANY,
2047                                              NULL);
2048                 if (IS_ERR(op_data))
2049                         RETURN(PTR_ERR(op_data));
2050
2051                 op_data->op_valid = OBD_MD_FLFLAGS;
2052                 rc = md_getattr(sbi->ll_md_exp, op_data, &req);
2053                 ll_finish_md_op_data(op_data);
2054                 if (rc) {
2055                         CERROR("%s: failure inode "DFID": rc = %d\n",
2056                                sbi->ll_md_exp->exp_obd->obd_name,
2057                                PFID(ll_inode2fid(inode)), rc);
2058                         RETURN(-abs(rc));
2059                 }
2060
2061                 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
2062
2063                 flags = body->mbo_flags;
2064
2065                 ptlrpc_req_finished(req);
2066
2067                 RETURN(put_user(flags, (int __user *)arg));
2068         }
2069         case FSFILT_IOC_SETFLAGS: {
2070                 struct iattr *attr;
2071                 struct md_op_data *op_data;
2072                 struct cl_object *obj;
2073
2074                 if (get_user(flags, (int __user *)arg))
2075                         RETURN(-EFAULT);
2076
2077                 op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
2078                                              LUSTRE_OPC_ANY, NULL);
2079                 if (IS_ERR(op_data))
2080                         RETURN(PTR_ERR(op_data));
2081
2082                 op_data->op_attr_flags = flags;
2083                 op_data->op_attr.ia_valid |= ATTR_ATTR_FLAG;
2084                 rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, &req);
2085                 ll_finish_md_op_data(op_data);
2086                 ptlrpc_req_finished(req);
2087                 if (rc)
2088                         RETURN(rc);
2089
2090                 inode->i_flags = ll_ext_to_inode_flags(flags);
2091
2092                 obj = ll_i2info(inode)->lli_clob;
2093                 if (obj == NULL)
2094                         RETURN(0);
2095
2096                 OBD_ALLOC_PTR(attr);
2097                 if (attr == NULL)
2098                         RETURN(-ENOMEM);
2099
2100                 attr->ia_valid = ATTR_ATTR_FLAG;
2101                 rc = cl_setattr_ost(obj, attr, flags);
2102
2103                 OBD_FREE_PTR(attr);
2104                 RETURN(rc);
2105         }
2106         default:
2107                 RETURN(-ENOSYS);
2108         }
2109
2110         RETURN(0);
2111 }
2112
2113 int ll_flush_ctx(struct inode *inode)
2114 {
2115         struct ll_sb_info  *sbi = ll_i2sbi(inode);
2116
2117         CDEBUG(D_SEC, "flush context for user %d\n",
2118                from_kuid(&init_user_ns, current_uid()));
2119
2120         obd_set_info_async(NULL, sbi->ll_md_exp,
2121                            sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
2122                            0, NULL, NULL);
2123         obd_set_info_async(NULL, sbi->ll_dt_exp,
2124                            sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
2125                            0, NULL, NULL);
2126         return 0;
2127 }
2128
2129 /* umount -f client means force down, don't save state */
2130 void ll_umount_begin(struct super_block *sb)
2131 {
2132         struct ll_sb_info *sbi = ll_s2sbi(sb);
2133         struct obd_device *obd;
2134         struct obd_ioctl_data *ioc_data;
2135         ENTRY;
2136
2137         CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb,
2138                sb->s_count, atomic_read(&sb->s_active));
2139
2140         obd = class_exp2obd(sbi->ll_md_exp);
2141         if (obd == NULL) {
2142                 CERROR("Invalid MDC connection handle %#llx\n",
2143                        sbi->ll_md_exp->exp_handle.h_cookie);
2144                 EXIT;
2145                 return;
2146         }
2147         obd->obd_force = 1;
2148
2149         obd = class_exp2obd(sbi->ll_dt_exp);
2150         if (obd == NULL) {
2151                 CERROR("Invalid LOV connection handle %#llx\n",
2152                        sbi->ll_dt_exp->exp_handle.h_cookie);
2153                 EXIT;
2154                 return;
2155         }
2156         obd->obd_force = 1;
2157
2158         OBD_ALLOC_PTR(ioc_data);
2159         if (ioc_data) {
2160                 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp,
2161                               sizeof *ioc_data, ioc_data, NULL);
2162
2163                 obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp,
2164                               sizeof *ioc_data, ioc_data, NULL);
2165
2166                 OBD_FREE_PTR(ioc_data);
2167         }
2168
2169         /* Really, we'd like to wait until there are no requests outstanding,
2170          * and then continue.  For now, we just invalidate the requests,
2171          * schedule() and sleep one second if needed, and hope.
2172          */
2173         schedule();
2174         EXIT;
2175 }
2176
2177 int ll_remount_fs(struct super_block *sb, int *flags, char *data)
2178 {
2179         struct ll_sb_info *sbi = ll_s2sbi(sb);
2180         char *profilenm = get_profile_name(sb);
2181         int err;
2182         __u32 read_only;
2183
2184         if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
2185                 read_only = *flags & MS_RDONLY;
2186                 err = obd_set_info_async(NULL, sbi->ll_md_exp,
2187                                          sizeof(KEY_READ_ONLY),
2188                                          KEY_READ_ONLY, sizeof(read_only),
2189                                          &read_only, NULL);
2190                 if (err) {
2191                         LCONSOLE_WARN("Failed to remount %s %s (%d)\n",
2192                                       profilenm, read_only ?
2193                                       "read-only" : "read-write", err);
2194                         return err;
2195                 }
2196
2197                 if (read_only)
2198                         sb->s_flags |= MS_RDONLY;
2199                 else
2200                         sb->s_flags &= ~MS_RDONLY;
2201
2202                 if (sbi->ll_flags & LL_SBI_VERBOSE)
2203                         LCONSOLE_WARN("Remounted %s %s\n", profilenm,
2204                                       read_only ?  "read-only" : "read-write");
2205         }
2206         return 0;
2207 }
2208
2209 /**
2210  * Cleanup the open handle that is cached on MDT-side.
2211  *
2212  * For open case, the client side open handling thread may hit error
2213  * after the MDT grant the open. Under such case, the client should
2214  * send close RPC to the MDT as cleanup; otherwise, the open handle
2215  * on the MDT will be leaked there until the client umount or evicted.
2216  *
2217  * In further, if someone unlinked the file, because the open handle
2218  * holds the reference on such file/object, then it will block the
2219  * subsequent threads that want to locate such object via FID.
2220  *
2221  * \param[in] sb        super block for this file-system
2222  * \param[in] open_req  pointer to the original open request
2223  */
2224 void ll_open_cleanup(struct super_block *sb, struct ptlrpc_request *open_req)
2225 {
2226         struct mdt_body                 *body;
2227         struct md_op_data               *op_data;
2228         struct ptlrpc_request           *close_req = NULL;
2229         struct obd_export               *exp       = ll_s2sbi(sb)->ll_md_exp;
2230         ENTRY;
2231
2232         body = req_capsule_server_get(&open_req->rq_pill, &RMF_MDT_BODY);
2233         OBD_ALLOC_PTR(op_data);
2234         if (op_data == NULL) {
2235                 CWARN("%s: cannot allocate op_data to release open handle for "
2236                       DFID"\n",
2237                       ll_get_fsname(sb, NULL, 0), PFID(&body->mbo_fid1));
2238
2239                 RETURN_EXIT;
2240         }
2241
2242         op_data->op_fid1 = body->mbo_fid1;
2243         op_data->op_handle = body->mbo_handle;
2244         op_data->op_mod_time = cfs_time_current_sec();
2245         md_close(exp, op_data, NULL, &close_req);
2246         ptlrpc_req_finished(close_req);
2247         ll_finish_md_op_data(op_data);
2248
2249         EXIT;
2250 }
2251
2252 int ll_prep_inode(struct inode **inode, struct ptlrpc_request *req,
2253                   struct super_block *sb, struct lookup_intent *it)
2254 {
2255         struct ll_sb_info *sbi = NULL;
2256         struct lustre_md md = { NULL };
2257         int rc;
2258         ENTRY;
2259
2260         LASSERT(*inode || sb);
2261         sbi = sb ? ll_s2sbi(sb) : ll_i2sbi(*inode);
2262         rc = md_get_lustre_md(sbi->ll_md_exp, req, sbi->ll_dt_exp,
2263                               sbi->ll_md_exp, &md);
2264         if (rc != 0)
2265                 GOTO(cleanup, rc);
2266
2267         if (*inode) {
2268                 rc = ll_update_inode(*inode, &md);
2269                 if (rc != 0)
2270                         GOTO(out, rc);
2271         } else {
2272                 LASSERT(sb != NULL);
2273
2274                 /*
2275                  * At this point server returns to client's same fid as client
2276                  * generated for creating. So using ->fid1 is okay here.
2277                  */
2278                 if (!fid_is_sane(&md.body->mbo_fid1)) {
2279                         CERROR("%s: Fid is insane "DFID"\n",
2280                                 ll_get_fsname(sb, NULL, 0),
2281                                 PFID(&md.body->mbo_fid1));
2282                         GOTO(out, rc = -EINVAL);
2283                 }
2284
2285                 *inode = ll_iget(sb, cl_fid_build_ino(&md.body->mbo_fid1,
2286                                              sbi->ll_flags & LL_SBI_32BIT_API),
2287                                  &md);
2288                 if (IS_ERR(*inode)) {
2289 #ifdef CONFIG_FS_POSIX_ACL
2290                         if (md.posix_acl) {
2291                                 posix_acl_release(md.posix_acl);
2292                                 md.posix_acl = NULL;
2293                         }
2294 #endif
2295                         rc = IS_ERR(*inode) ? PTR_ERR(*inode) : -ENOMEM;
2296                         *inode = NULL;
2297                         CERROR("new_inode -fatal: rc %d\n", rc);
2298                         GOTO(out, rc);
2299                 }
2300         }
2301
2302         /* Handling piggyback layout lock.
2303          * Layout lock can be piggybacked by getattr and open request.
2304          * The lsm can be applied to inode only if it comes with a layout lock
2305          * otherwise correct layout may be overwritten, for example:
2306          * 1. proc1: mdt returns a lsm but not granting layout
2307          * 2. layout was changed by another client
2308          * 3. proc2: refresh layout and layout lock granted
2309          * 4. proc1: to apply a stale layout */
2310         if (it != NULL && it->it_lock_mode != 0) {
2311                 struct lustre_handle lockh;
2312                 struct ldlm_lock *lock;
2313
2314                 lockh.cookie = it->it_lock_handle;
2315                 lock = ldlm_handle2lock(&lockh);
2316                 LASSERT(lock != NULL);
2317                 if (ldlm_has_layout(lock)) {
2318                         struct cl_object_conf conf;
2319
2320                         memset(&conf, 0, sizeof(conf));
2321                         conf.coc_opc = OBJECT_CONF_SET;
2322                         conf.coc_inode = *inode;
2323                         conf.coc_lock = lock;
2324                         conf.u.coc_layout = md.layout;
2325                         (void)ll_layout_conf(*inode, &conf);
2326                 }
2327                 LDLM_LOCK_PUT(lock);
2328         }
2329
2330         GOTO(out, rc = 0);
2331
2332 out:
2333         md_free_lustre_md(sbi->ll_md_exp, &md);
2334
2335 cleanup:
2336         if (rc != 0 && it != NULL && it->it_op & IT_OPEN)
2337                 ll_open_cleanup(sb != NULL ? sb : (*inode)->i_sb, req);
2338
2339         return rc;
2340 }
2341
2342 int ll_obd_statfs(struct inode *inode, void __user *arg)
2343 {
2344         struct ll_sb_info *sbi = NULL;
2345         struct obd_export *exp;
2346         char *buf = NULL;
2347         struct obd_ioctl_data *data = NULL;
2348         __u32 type;
2349         int len = 0, rc;
2350
2351         if (!inode || !(sbi = ll_i2sbi(inode)))
2352                 GOTO(out_statfs, rc = -EINVAL);
2353
2354         rc = obd_ioctl_getdata(&buf, &len, arg);
2355         if (rc)
2356                 GOTO(out_statfs, rc);
2357
2358         data = (void*)buf;
2359         if (!data->ioc_inlbuf1 || !data->ioc_inlbuf2 ||
2360             !data->ioc_pbuf1 || !data->ioc_pbuf2)
2361                 GOTO(out_statfs, rc = -EINVAL);
2362
2363         if (data->ioc_inllen1 != sizeof(__u32) ||
2364             data->ioc_inllen2 != sizeof(__u32) ||
2365             data->ioc_plen1 != sizeof(struct obd_statfs) ||
2366             data->ioc_plen2 != sizeof(struct obd_uuid))
2367                 GOTO(out_statfs, rc = -EINVAL);
2368
2369         memcpy(&type, data->ioc_inlbuf1, sizeof(__u32));
2370         if (type & LL_STATFS_LMV)
2371                 exp = sbi->ll_md_exp;
2372         else if (type & LL_STATFS_LOV)
2373                 exp = sbi->ll_dt_exp;
2374         else
2375                 GOTO(out_statfs, rc = -ENODEV);
2376
2377         rc = obd_iocontrol(IOC_OBD_STATFS, exp, len, buf, NULL);
2378         if (rc)
2379                 GOTO(out_statfs, rc);
2380 out_statfs:
2381         if (buf)
2382                 obd_ioctl_freedata(buf, len);
2383         return rc;
2384 }
2385
2386 int ll_process_config(struct lustre_cfg *lcfg)
2387 {
2388         struct super_block *sb;
2389         unsigned long x;
2390         int rc = 0;
2391         char *ptr;
2392
2393         /* The instance name contains the sb: lustre-client-aacfe000 */
2394         ptr = strrchr(lustre_cfg_string(lcfg, 0), '-');
2395         if (!ptr || !*(++ptr))
2396                 return -EINVAL;
2397         if (sscanf(ptr, "%lx", &x) != 1)
2398                 return -EINVAL;
2399         sb = (struct super_block *)x;
2400         /* This better be a real Lustre superblock! */
2401         LASSERT(s2lsi(sb)->lsi_lmd->lmd_magic == LMD_MAGIC);
2402
2403         /* Note we have not called client_common_fill_super yet, so
2404            proc fns must be able to handle that! */
2405         rc = class_process_proc_param(PARAM_LLITE, lprocfs_llite_obd_vars,
2406                                       lcfg, sb);
2407         if (rc > 0)
2408                 rc = 0;
2409         return rc;
2410 }
2411
2412 /* this function prepares md_op_data hint for passing it down to MD stack. */
2413 struct md_op_data *ll_prep_md_op_data(struct md_op_data *op_data,
2414                                       struct inode *i1, struct inode *i2,
2415                                       const char *name, size_t namelen,
2416                                       __u32 mode, __u32 opc, void *data)
2417 {
2418         LASSERT(i1 != NULL);
2419
2420         if (name == NULL) {
2421                 /* Do not reuse namelen for something else. */
2422                 if (namelen != 0)
2423                         return ERR_PTR(-EINVAL);
2424         } else {
2425                 if (namelen > ll_i2sbi(i1)->ll_namelen)
2426                         return ERR_PTR(-ENAMETOOLONG);
2427
2428                 if (!lu_name_is_valid_2(name, namelen))
2429                         return ERR_PTR(-EINVAL);
2430         }
2431
2432         if (op_data == NULL)
2433                 OBD_ALLOC_PTR(op_data);
2434
2435         if (op_data == NULL)
2436                 return ERR_PTR(-ENOMEM);
2437
2438         ll_i2gids(op_data->op_suppgids, i1, i2);
2439         op_data->op_fid1 = *ll_inode2fid(i1);
2440         op_data->op_default_stripe_offset = -1;
2441         if (S_ISDIR(i1->i_mode)) {
2442                 op_data->op_mea1 = ll_i2info(i1)->lli_lsm_md;
2443                 if (opc == LUSTRE_OPC_MKDIR)
2444                         op_data->op_default_stripe_offset =
2445                                    ll_i2info(i1)->lli_def_stripe_offset;
2446         }
2447
2448         if (i2) {
2449                 op_data->op_fid2 = *ll_inode2fid(i2);
2450                 if (S_ISDIR(i2->i_mode))
2451                         op_data->op_mea2 = ll_i2info(i2)->lli_lsm_md;
2452         } else {
2453                 fid_zero(&op_data->op_fid2);
2454         }
2455
2456         if (ll_i2sbi(i1)->ll_flags & LL_SBI_64BIT_HASH)
2457                 op_data->op_cli_flags |= CLI_HASH64;
2458
2459         if (ll_need_32bit_api(ll_i2sbi(i1)))
2460                 op_data->op_cli_flags |= CLI_API32;
2461
2462         op_data->op_name = name;
2463         op_data->op_namelen = namelen;
2464         op_data->op_mode = mode;
2465         op_data->op_mod_time = cfs_time_current_sec();
2466         op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
2467         op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
2468         op_data->op_cap = cfs_curproc_cap_pack();
2469         if ((opc == LUSTRE_OPC_CREATE) && (name != NULL) &&
2470              filename_is_volatile(name, namelen, &op_data->op_mds)) {
2471                 op_data->op_bias |= MDS_CREATE_VOLATILE;
2472         } else {
2473                 op_data->op_mds = 0;
2474         }
2475         op_data->op_data = data;
2476
2477         return op_data;
2478 }
2479
2480 void ll_finish_md_op_data(struct md_op_data *op_data)
2481 {
2482         security_release_secctx(op_data->op_file_secctx,
2483                                 op_data->op_file_secctx_size);
2484         OBD_FREE_PTR(op_data);
2485 }
2486
2487 #ifdef HAVE_SUPEROPS_USE_DENTRY
2488 int ll_show_options(struct seq_file *seq, struct dentry *dentry)
2489 #else
2490 int ll_show_options(struct seq_file *seq, struct vfsmount *vfs)
2491 #endif
2492 {
2493         struct ll_sb_info *sbi;
2494
2495 #ifdef HAVE_SUPEROPS_USE_DENTRY
2496         LASSERT((seq != NULL) && (dentry != NULL));
2497         sbi = ll_s2sbi(dentry->d_sb);
2498 #else
2499         LASSERT((seq != NULL) && (vfs != NULL));
2500         sbi = ll_s2sbi(vfs->mnt_sb);
2501 #endif
2502
2503         if (sbi->ll_flags & LL_SBI_NOLCK)
2504                 seq_puts(seq, ",nolock");
2505
2506         if (sbi->ll_flags & LL_SBI_FLOCK)
2507                 seq_puts(seq, ",flock");
2508
2509         if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
2510                 seq_puts(seq, ",localflock");
2511
2512         if (sbi->ll_flags & LL_SBI_USER_XATTR)
2513                 seq_puts(seq, ",user_xattr");
2514
2515         if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
2516                 seq_puts(seq, ",lazystatfs");
2517
2518         if (sbi->ll_flags & LL_SBI_USER_FID2PATH)
2519                 seq_puts(seq, ",user_fid2path");
2520
2521         if (sbi->ll_flags & LL_SBI_ALWAYS_PING)
2522                 seq_puts(seq, ",always_ping");
2523
2524         RETURN(0);
2525 }
2526
2527 /**
2528  * Get obd name by cmd, and copy out to user space
2529  */
2530 int ll_get_obd_name(struct inode *inode, unsigned int cmd, unsigned long arg)
2531 {
2532         struct ll_sb_info *sbi = ll_i2sbi(inode);
2533         struct obd_device *obd;
2534         ENTRY;
2535
2536         if (cmd == OBD_IOC_GETDTNAME)
2537                 obd = class_exp2obd(sbi->ll_dt_exp);
2538         else if (cmd == OBD_IOC_GETMDNAME)
2539                 obd = class_exp2obd(sbi->ll_md_exp);
2540         else
2541                 RETURN(-EINVAL);
2542
2543         if (!obd)
2544                 RETURN(-ENOENT);
2545
2546         if (copy_to_user((void __user *)arg, obd->obd_name,
2547                          strlen(obd->obd_name) + 1))
2548                 RETURN(-EFAULT);
2549
2550         RETURN(0);
2551 }
2552
2553 /**
2554  * Get lustre file system name by \a sbi. If \a buf is provided(non-NULL), the
2555  * fsname will be returned in this buffer; otherwise, a static buffer will be
2556  * used to store the fsname and returned to caller.
2557  */
2558 char *ll_get_fsname(struct super_block *sb, char *buf, int buflen)
2559 {
2560         static char fsname_static[MTI_NAME_MAXLEN];
2561         struct lustre_sb_info *lsi = s2lsi(sb);
2562         char *ptr;
2563         int len;
2564
2565         if (buf == NULL) {
2566                 /* this means the caller wants to use static buffer
2567                  * and it doesn't care about race. Usually this is
2568                  * in error reporting path */
2569                 buf = fsname_static;
2570                 buflen = sizeof(fsname_static);
2571         }
2572
2573         len = strlen(lsi->lsi_lmd->lmd_profile);
2574         ptr = strrchr(lsi->lsi_lmd->lmd_profile, '-');
2575         if (ptr && (strcmp(ptr, "-client") == 0))
2576                 len -= 7;
2577
2578         if (unlikely(len >= buflen))
2579                 len = buflen - 1;
2580         strncpy(buf, lsi->lsi_lmd->lmd_profile, len);
2581         buf[len] = '\0';
2582
2583         return buf;
2584 }
2585
2586 static char* ll_d_path(struct dentry *dentry, char *buf, int bufsize)
2587 {
2588         char *path = NULL;
2589
2590         struct path p;
2591
2592         p.dentry = dentry;
2593         p.mnt = current->fs->root.mnt;
2594         path_get(&p);
2595         path = d_path(&p, buf, bufsize);
2596         path_put(&p);
2597         return path;
2598 }
2599
2600 void ll_dirty_page_discard_warn(struct page *page, int ioret)
2601 {
2602         char *buf, *path = NULL;
2603         struct dentry *dentry = NULL;
2604         struct inode *inode = page->mapping->host;
2605
2606         /* this can be called inside spin lock so use GFP_ATOMIC. */
2607         buf = (char *)__get_free_page(GFP_ATOMIC);
2608         if (buf != NULL) {
2609                 dentry = d_find_alias(page->mapping->host);
2610                 if (dentry != NULL)
2611                         path = ll_d_path(dentry, buf, PAGE_SIZE);
2612         }
2613
2614         CDEBUG(D_WARNING,
2615                "%s: dirty page discard: %s/fid: "DFID"/%s may get corrupted "
2616                "(rc %d)\n", ll_get_fsname(page->mapping->host->i_sb, NULL, 0),
2617                s2lsi(page->mapping->host->i_sb)->lsi_lmd->lmd_dev,
2618                PFID(ll_inode2fid(inode)),
2619                (path && !IS_ERR(path)) ? path : "", ioret);
2620
2621         if (dentry != NULL)
2622                 dput(dentry);
2623
2624         if (buf != NULL)
2625                 free_page((unsigned long)buf);
2626 }
2627
2628 ssize_t ll_copy_user_md(const struct lov_user_md __user *md,
2629                         struct lov_user_md **kbuf)
2630 {
2631         struct lov_user_md      lum;
2632         ssize_t                 lum_size;
2633         ENTRY;
2634
2635         if (copy_from_user(&lum, md, sizeof(lum)))
2636                 RETURN(-EFAULT);
2637
2638         lum_size = ll_lov_user_md_size(&lum);
2639         if (lum_size < 0)
2640                 RETURN(lum_size);
2641
2642         OBD_ALLOC(*kbuf, lum_size);
2643         if (*kbuf == NULL)
2644                 RETURN(-ENOMEM);
2645
2646         if (copy_from_user(*kbuf, md, lum_size) != 0) {
2647                 OBD_FREE(*kbuf, lum_size);
2648                 RETURN(-EFAULT);
2649         }
2650
2651         RETURN(lum_size);
2652 }
2653
2654 /*
2655  * Compute llite root squash state after a change of root squash
2656  * configuration setting or add/remove of a lnet nid
2657  */
2658 void ll_compute_rootsquash_state(struct ll_sb_info *sbi)
2659 {
2660         struct root_squash_info *squash = &sbi->ll_squash;
2661         int i;
2662         bool matched;
2663         lnet_process_id_t id;
2664
2665         /* Update norootsquash flag */
2666         down_write(&squash->rsi_sem);
2667         if (list_empty(&squash->rsi_nosquash_nids))
2668                 sbi->ll_flags &= ~LL_SBI_NOROOTSQUASH;
2669         else {
2670                 /* Do not apply root squash as soon as one of our NIDs is
2671                  * in the nosquash_nids list */
2672                 matched = false;
2673                 i = 0;
2674                 while (LNetGetId(i++, &id) != -ENOENT) {
2675                         if (LNET_NETTYP(LNET_NIDNET(id.nid)) == LOLND)
2676                                 continue;
2677                         if (cfs_match_nid(id.nid, &squash->rsi_nosquash_nids)) {
2678                                 matched = true;
2679                                 break;
2680                         }
2681                 }
2682                 if (matched)
2683                         sbi->ll_flags |= LL_SBI_NOROOTSQUASH;
2684                 else
2685                         sbi->ll_flags &= ~LL_SBI_NOROOTSQUASH;
2686         }
2687         up_write(&squash->rsi_sem);
2688 }
2689
2690 /**
2691  * Parse linkea content to extract information about a given hardlink
2692  *
2693  * \param[in]   ldata      - Initialized linkea data
2694  * \param[in]   linkno     - Link identifier
2695  * \param[out]  parent_fid - The entry's parent FID
2696  * \param[out]  ln         - Entry name destination buffer
2697  *
2698  * \retval 0 on success
2699  * \retval Appropriate negative error code on failure
2700  */
2701 static int ll_linkea_decode(struct linkea_data *ldata, unsigned int linkno,
2702                             struct lu_fid *parent_fid, struct lu_name *ln)
2703 {
2704         unsigned int    idx;
2705         int             rc;
2706         ENTRY;
2707
2708         rc = linkea_init(ldata);
2709         if (rc < 0)
2710                 RETURN(rc);
2711
2712         if (linkno >= ldata->ld_leh->leh_reccount)
2713                 /* beyond last link */
2714                 RETURN(-ENODATA);
2715
2716         linkea_first_entry(ldata);
2717         for (idx = 0; ldata->ld_lee != NULL; idx++) {
2718                 linkea_entry_unpack(ldata->ld_lee, &ldata->ld_reclen, ln,
2719                                     parent_fid);
2720                 if (idx == linkno)
2721                         break;
2722
2723                 linkea_next_entry(ldata);
2724         }
2725
2726         if (idx < linkno)
2727                 RETURN(-ENODATA);
2728
2729         RETURN(0);
2730 }
2731
2732 /**
2733  * Get parent FID and name of an identified link. Operation is performed for
2734  * a given link number, letting the caller iterate over linkno to list one or
2735  * all links of an entry.
2736  *
2737  * \param[in]     file - File descriptor against which to perform the operation
2738  * \param[in,out] arg  - User-filled structure containing the linkno to operate
2739  *                       on and the available size. It is eventually filled with
2740  *                       the requested information or left untouched on error
2741  *
2742  * \retval - 0 on success
2743  * \retval - Appropriate negative error code on failure
2744  */
2745 int ll_getparent(struct file *file, struct getparent __user *arg)
2746 {
2747         struct dentry           *dentry = file_dentry(file);
2748         struct inode            *inode = file_inode(file);
2749         struct linkea_data      *ldata;
2750         struct lu_buf            buf = LU_BUF_NULL;
2751         struct lu_name           ln;
2752         struct lu_fid            parent_fid;
2753         __u32                    linkno;
2754         __u32                    name_size;
2755         int                      rc;
2756
2757         ENTRY;
2758
2759         if (!cfs_capable(CFS_CAP_DAC_READ_SEARCH) &&
2760             !(ll_i2sbi(inode)->ll_flags & LL_SBI_USER_FID2PATH))
2761                 RETURN(-EPERM);
2762
2763         if (get_user(name_size, &arg->gp_name_size))
2764                 RETURN(-EFAULT);
2765
2766         if (get_user(linkno, &arg->gp_linkno))
2767                 RETURN(-EFAULT);
2768
2769         if (name_size > PATH_MAX)
2770                 RETURN(-EINVAL);
2771
2772         OBD_ALLOC(ldata, sizeof(*ldata));
2773         if (ldata == NULL)
2774                 RETURN(-ENOMEM);
2775
2776         rc = linkea_data_new(ldata, &buf);
2777         if (rc < 0)
2778                 GOTO(ldata_free, rc);
2779
2780         rc = ll_getxattr(dentry, XATTR_NAME_LINK, buf.lb_buf, buf.lb_len);
2781         if (rc < 0)
2782                 GOTO(lb_free, rc);
2783
2784         rc = ll_linkea_decode(ldata, linkno, &parent_fid, &ln);
2785         if (rc < 0)
2786                 GOTO(lb_free, rc);
2787
2788         if (ln.ln_namelen >= name_size)
2789                 GOTO(lb_free, rc = -EOVERFLOW);
2790
2791         if (copy_to_user(&arg->gp_fid, &parent_fid, sizeof(arg->gp_fid)))
2792                 GOTO(lb_free, rc = -EFAULT);
2793
2794         if (copy_to_user(&arg->gp_name, ln.ln_name, ln.ln_namelen))
2795                 GOTO(lb_free, rc = -EFAULT);
2796
2797         if (put_user('\0', arg->gp_name + ln.ln_namelen))
2798                 GOTO(lb_free, rc = -EFAULT);
2799
2800 lb_free:
2801         lu_buf_free(&buf);
2802 ldata_free:
2803         OBD_FREE(ldata, sizeof(*ldata));
2804
2805         RETURN(rc);
2806 }